this was ,a helpful reviewer for all the LET takers!!!!

1. GENERAL EDUCATION
Biological Science and
Physical Science

2. Read the text below then answer items 1-3.
The students were arguing about the results of their
experiment. Following were their comments:
Student A: “Our conclusion is wrong. It is the opposite
of what we learned the lecture.”
Students B and C: That’s what came out. After we
designed the experiment and observed for two weeks
we should not change the results.
Student D: Maybe, it’s good to find out why our
findings differ from what was given in the lecture. Why
not repeat the same experiment?

3. 1. Which trait of a scientist does student A seem
NOT have?
A. A. Open-mindedness
B. Truthfulness
C. Blind obedience
D. Objectivity

4. 2. Students B and C display which part of a
scientist?
A. Objectivity
B. Authoritativeness
C. Truthfulness
D. Critical attitude

5. 3. Why can Student D be said to have the
bearing of a scientist?
A. He/She can relate to people
B. He/She is objective.
C. He/She has a critical mind
D. He/She is open-minded

6. 4. Marco is always interested in asking
questions. He is also very eager to find the
answers to his questions. What scientific
attitude is he displaying?
A. Curiosity
B. Rationality
C. Absence of prejudice
D. Wonder

7. 5. Monica respects the ideas of her colleagues
even if they are very much contrary to her own
beliefs. What important scientific attitude is
seen in her actions?
A. Honesty
B. Absence of prejudice
C. Open-mindedness
D. Acceptance

8. 6. Carlito weighs evidences dutifully making any
conclusions and decisions. He dissects the
information individually before coming to a final
conclusion. What scientific attitude is he
displaying?
A. Carefulness
B. Rationality
C. Precision
D. Accuracy

9. 7. While performing an experiment, Mico
expresses his opinions and tries new ideas even
at the risk of failure or criticism. What scientific
trait is displayed in this situation?
A. Curiosity
B. Risk-taking
C. Diligence
D. Absence of ambiguity

10. 8. Paul admits that he is not free from
committing errors. He recognizes that there
may be better ideas and realizes that there are
individuals whom he may have to consult to
arrive at correct observations and conclusions.
What scientific trait is he displaying?
A. Open-mindedness
B. Objectivity
C. Rationality
D. Humility

11. 9. While performing research for a
pharmaceutical company, Melanie gave a
truthful report of observations. She did not
withhold important information just to please
herself or her company. What scientific attitude
did she display?
A. Absence of bias
B. Faith in God
C. Intellectual honesty
D. Critical mindedness

12. 10. Chona actively participates in a task and also
dutifully performs tasks assigned to her. What
scientific attitude in this situation?
A. Camaraderie
B. Responsibility
C. Being a team player
D. Unity

13. 11. Fernan always seeks to think outside the box.
He always aims to generate new original ideas.
What scientific attitude is he displaying?
A. Inventiveness
B. Nobility
C. Indifference
D. Absence of prejudice

14. 12. Adolfo does not allow his feelings and biases
to influence his recording observations,
interpretation of data, and formulation of
conclusions. What scientific attitude is reflected
in his actions?
A. Absence of bias
B. Concern for the environment
C. Rationality
D. Objectivity

15. 13. Dennis bases suggestions and conclusions on
evidences. When in doubt, questions the
veracity of a statement in relation to the
evidences presented. What scientific attitude is
seen in his actions?
A. Firm set of beliefs
B. Absence of bias
C. Critical-mindedness
D. Intellectual honesty

16. 14. Jose believes that everything that happens
in this world has a cause or reason. What
scientific attitude is seen in his actions?
A. Curiosity
B. Firm set of beliefs
C. Honesty
D. Critical-mindedness

17. 15. Pepita believes that God is the ultimate
source of all wisdom. She upholds that it is
through God’s grace that she is able to discover
the mysteries God’s creations. What scientific
attitude is she displaying?
A. Faith in God
B. Fatalism
C. Curiosity
D. Concern for the environment

18. 16. Alice does not allow her judgment to be
influenced by her likes or dislikes. What
scientific attitude is seen in her actions?
A. Prejudice
B. Critical thinking
C. Honesty
D. Absence of bias

19. 17. Miguel only creates inventions that respect and
help conserve natural resources is an advocate
against pollution and illegal logging. What scientific
attitude is seen in his actions?
A. Concern for the environment
B. Love for nature
C. Belief in evolution
D. Conservatism

20. 18. Nicolaus Copernicus believed that the church was
wrong about the sun revolving around the Earth.
Advancing his theory that the earth revolved around
the sun eventually cost him his life. What scientific
attitude is seen in his actions?
A. Egotism
B. Selflessness
C. Revolutionary
D. Positivism

21. 19. If two variables X and Y are directly related, which
of these is NOT true?
A. As X increases, Y also increases.
B. A high Y is associated with a high X.
C. When X increases, Y decreases.
D. When X is low, Y also is low.

22. Read the following, then answer the questions
#20-22.
Beda wants to find out if different types of wood soak up the
same amount of water when wet. She plans to do the
following:
I. Weigh a dry block of each type of wood.
II. Put each block into a container full of water.
III.Leave the wood in the water.
IV.Take the wood out, dry the outside of each block and
reweigh.
V. Calculate the amount of the water soaked up.

23. 20. To be a fair test, what variables should she
control?
I. Size of each block
II. Time left in water
III. Type of wood
IV. Amount of water
A. I and III
B. III and IV
C. I and II
D. II and IV

24. 21. In this experiment, what is the dependent
variable?
A. Type of wood used
B. The amount of water soaked up
C. Time left in the water
D. Dry weight of each block

25. 22. What is the independent variable?
A. Type of wood used
B. Dry weight of each block
C. Amount of water soaked up
D. Time left in the water

26. Read the following, then answer the questions # 23-27.
The class was asked to design an experiment to test one
group came up with this experimental design.
For detergent they got Tide, Surf, and Champion. For fish,
they had tilapia fingerling, goldfish and baby janitor fish
contained in different sizes and shapes of bottles. To the
tilapia fingerling, they put 1 tbsp of Tide. To the goldfish, they
put 1 tbsp of surf and to the baby janitor fish, 1 tbsp of
Champion.

27. 23. What is the control group?
A. The tilapia with 1 tbsp of Tide
B. The baby janitor fish with 1 tbsp of Champion
C. The goldfish with 1 tbsp of Surf
D. Cannot be determined

28. 24. What is the experimental group?
A. Cannot be determined
B. The baby janitor fish with 1 tbsp of Champion
C. The goldfish with 1 tbsp of Surf
D. The tilapia with 1 tbsp of Tide

29. 25. What is the dependent variable?
A. The brand of detergent
B. The effect of detergent on Fish
C. The amount of detergent
D. The amount of water

30. 26. Is there any defect in the experimental design?
A.None, it is a simple yet perfect design.
B.Yes, not only one but several.
C.Yes, there is, but was remedied by the fact that
3 kinds of detergents were used.
D.Yes, there is, but was compensated by the use
of not only one type of fish but 3.

31. 27. If you were to improve on the experimental
design, what should you do?
I. Just focus on one dependent variable at a time,
e.g. brand of detergent.
II. Make use of the same type and size of fish.
III.Increase the number of fish and reduce the
number of detergent brands involved.
A.I and II C. I and III
B.II only D. I only

32. 28. Printed on the label of a bottle of cough medicine is
the following instruction: “Store away from light,
below 30 degrees C.” What can you infer about the
cough medicine?
A.It should be hidden away from children.
B.It should be stored in the refrigerator.
C.It is in a dark, light-proof bottle.
D.It is affected by heat and light.

33. 29. It is commonly observed that most respondents to survey
questionnaire checklist just check the answer without really
reading them. What conclusion can be derived from the
common observation?
A.Data gather by way of questionnaire checklists are not
very reliable.
B. Respondents need to be convinced of the importance of
research data.
C.Researchers resort to questionnaire checklist for data-
gathering because it is the easiest method.
D.Good survey questionnaires are not easy to make.

34. Teacher M showed the class the potted plants
placed on the window sill. She asked them to
observe the direction of their growth. The pupils
observed that the plants tended to grow
outward. Then Teacher M asked the class this
question: “Why do you think they tended to
grow outward?”
.

35. 30. What was Teacher M engaging the pupils to
do?
A.Formulate hypothesis
B.Draw conclusion
C.Design an experiment
D.Observe

36. 31. The existence of extraterrestrial life may never be
proven, but this idea will become more scientifically
acceptable over time if _______________.
A.Hypotheses are made related to the idea.
B.No one disputes this idea in a scientific forum.
C.Alternative hypotheses are proposed and confirmed.
D.Increasing scientific evidence supports the idea.

37. 32. Which comes ahead in the scientific method-
observation or defining the problem?
A.Observation so that you can come up with a
scientific problem.
B.Defining a problem so that your observation
becomes focused.
C.No definite answer. What you observe makes
you think of a problem and a problem makes
you observe.
D.They happen at the same time. Both are steps of
the scientific method.

38. 33. You like to know how many of your pupils have
mothers and/or mothers who are presently employed as
OCWs. What is/are the most reliable way to gather data?
I. Interview the pupils.
II. Give questionnaire checklist to selected pupils.
III.Study the grade of the pupils because those performing
poorly usually have parents who work as OCWs.
A.I only C. II only
B.I and II D. I, II and III

39. 34. Which of the following has the smallest mass
when measured in an equal arm balance?
A.1/8 sheet of pad paper
B.1/3 sheet of pad paper
C.1/4 sheet of pad paper
D.1/2 sheet of pad paper

40. 35. In computing data, Student F computes up to the
second decimal place. As a researcher or scientist,
what trait/s do/es Student F possess?
I. Accuracy
II. Critical-mindedness
III.Objectivity
IV.Truthfulness
A.I and IV C. I and II
B.II and III D. III and IV

41. 36. Which does NOT belong?
A.Conclusion
B.Surmise
C.Hypothesis
D.Conjecture

42. Nancy wanted to find out if virgin coconut oil can be
used as a preservative for peanut. She placed 10
peanuts each in 2 glasses. In one glass, she added
enough virgin coconut oil to cover the peanuts
completely. She did not put any liquid on the other
glass. She then kept the two glasses on a shelf and
observed them for two weeks.
For number 37-41, refer to the scientific case described
below.
Choose the best answer to the questions that follows.

43. 37. Which among the following statements is the best
problem statement in Nancy’s experiment?
A.Is virgin coconut oil useful as a preservative for
peanuts?
B.How many peanuts can be preserved using virgin
coconut oil?
C.How long can virgin coconut oil act as a
preservative?
D.Is virgin coconut oil better than formalin as a
preservative?

44. 38. Which among the following is NOT a controlled
variable in this experiment?
A.Number of peanuts.
B.Type of glass used.
C.Amount of virgin coconut oil.
D.Two weeks observation period.

45. 39. Which among the following is an observation that may
derive from this experiment?
I. Only four peanuts dried up in the glass without virgin
coconut oil because of room temperature.
II. Six peanuts did not dry up in the glass with virgin
coconut oil.
III.The duration of 2 weeks for this experiment is too long.
IV.Peanuts did not wither in virgin coconut oil because of
the presence of stearic acid.
A.I only C. II and IV
B.I and II D. IV

46. 40. How many manipulated variables are present
in this experiment?
A.One
B.Two
C.Three
D. Four

47. 41. What is a suitable null hypothesis for this
experiment?
A.If virgin coconut oil is used, peanuts will be well-
preserved.
B.Virgin coconut oil is equally effective as commercial
nut preservatives.
C.The threshold for preservatives effect is 10 peanuts
only.
D.Virgin coconut oil has no significant
preservative effect on peanuts.

48. 42. During period of increased global temperatures,
which of the following is most likely to occur?
A.An increase in atmospheric CO2.
B.A decrease in atmospheric CO2.
C.A decrease in earthquakes.
D.An increase in earthquakes.

49. 43. Why is the Philippines much hotter than
Canada? The Philippines ________________
A.Receive sun rays closer to vertical position.
B.Has more vegetation to absorb sunlight.
C.Has days with more hours of light.
D.Has a denser population than Canada.

50. 44. Geothermal energy, an energy resource in the
country, is based on which phenomenon?
A.Earth’s internal energy heats its surface more than
the sun does.
B.There are concentrations of heat in some places
of earth’s crust.
C.Heat energy from the sun penetrates deep into the
earth.
D.Human activity is the largest source of heat energy
on earth.

51. 45. Which of these effects generally occurs as a result
of warm air mass and a cooler air mass converging at
earth’s surface?
A.Stormy weather patterns develop.
B.The sky becomes clear.
C.Winds die down.
D.Cloud formation decreases.

52. 46. Why do fisher folks catch more fish during the
new moon than during the full moon?
A.Fishes are more active during the new moon
because the salt content of water is just right.
B.Fished look for mates during the new moon.
C.Fishes go near the surface during the new moon
because the water is warmer.
D.Fishes are attracted to the light from the fishing
boat which fisherman makes use of during the
new moon.

53. 47. Bagoong smells because _________.
A.Air and volatile particles from bagoong mix and get
spoiled further.
B.That is the natural scent of bagoong.
C.Molecules from bagoong spread in air.
D.It uses spoiled fish ingredients

54. 48. Every morning when the sun shines through the
glass jalousies of Maria’s window, she sees a rainbow
on her wall. Which could explain this?
A.The glass jalousies break up the beam of
sunlight into the colors of the rainbow.
B.The glass jalousies cast colored shadows.
C.In the morning, sunlight shines on the wall painted
with rainbow colors.
D.There are water droplets on the glass that act like a
prism.

55. 49. Which of the following is TRUE about light and
seeing?
A.Light hits an object, bounces, and then enters the
eyes.
B.Light goes out from the eyes, hits an object, and then
returns to the eyes.
C.Light rays coming from an object meets light coming
from a light source, and then enters the eyes.
D.Light enters the eyes enabling people to see object
.

56. 50. Why do leaves with green color look green in the
sunlight?
A.The blue and yellow bounces off from the leaves.
B.They absorb the blue and yellow object and yellow
light.
C.They absorb the green light.
D.They reflect green light.

57. 51. Why does the level of water in a beaker rise after
a stone is placed in it?
A. The stone takes the place occupied by water.
B. The stone has more mass than the water.
C. The water weighs less than the stone.
D. The stone and the water occupy the same space.

58. 52. Why do people feel their ears pop or crack when
they are up in the air?
A. There are less air particles.
B. There are more air particles.
C. Air is cooler.
D. Air is cleaner.

59. 53. Which of the following activities help reduce water
pollution?
A. Cleaning of soap instead of detergents.
B. Treating waste water before it is discharged.
C. Throwing only liquid waste.
D. Using organic fertilizers in farms.

60. 54. The manager of textile factory considers at too
expensive to treat liquid waste so he suggested
digging a hole near the factory where the wastes can
be stored. Is this environmentally safe?
A. No, the liquid can be recycled.
B. No, the liquid wastes will seep to the
groundwater.
C. Yes, the liquid will pass through the layers if soil
and become clean.
D. Yes, the liquid can be recycled.

61. 55. Why are nights cooler when the sky is clear than
when it is overcast?
A. Rain falls when water vapor condenses above
freezing point.
B. Cooler vapor holds less vapor.
C. The sun is hidden during night.
D. There is no cloud cover to prevent heat from
escaping.

62. 56. Water covers about 75% of the Earth’s surface
and yet some people still do not have enough water to
drink. Why?
I. Most of World’s water is salty.
II. Most of our bodies of water are polluted by
chemicals.
III. Most fresh water are frozen in ice caps.
A. I and II
B. I, II and III
C. II and III
D. I and III

63. 57. Children born with a deficiency of thyroxin
__________if deficiency is not checked.
A. lose their hair
B. have weak bones
C. grow rapidly
D. Become mentally retarted

64. 58. The correct way of eating fruits is when eaten
__________.
A. With an empty stomach
B. after meals
C. before sleeping at night
D. during snacks

65. 59. An eclipse of the sun throws the shadow of
the __________.
A. Moon on the earth
B. moon on the sun
C. earth on the sun
D. earth on the moon

66. 60. The following are effects of global warming
EXCEPT __________.
A. thinning of the ozone layer
B. extreme weather events
C. changes in the aiming of seasonal patterns in
ecosystem
D. Expansion of tropical diseases.

67. 61. John experienced a lack of growth hormone (GH) as a
child. Now that John is an adult, it is likely the he
__________.
A. has cognitive and emotional problems as a result of his
hormone deficiency.
B. Has normal adult body proportions, but an
extremely short stature.
C. is of normal height, but has child – like body
proportions.
D. has developed physique similar to that typically seen in
females.

68. 62. Which among the following represents the
smallest unit of life?
A. Embryo
B. Organelle
C. Cell
D. Atom

69. 63. Which of the following statements about living
things is FALSE?
A. All living things use energy to function.
B. All living things are composed of cells.
C. All living things have nervous system.
D. All living things are capable of reproduction.

70. 64. Which of the following best describes a group of
cells that work together to perform a function?
A. Tissue
B. Organ system
C. Organ
D. Organism

71. 65. Which among the following are duplicated during
the process of mitosis?
A. Centromeres
B. Chromosomes
C. Chloroplasts
D. Centrosomes

72. 66. Plants create their own food by absorbing and
processing sunlight. The ability to produce one’s own
food source is metabolic process known as
__________.
A. Heterotrophy
B. Autotrophy
C. Homotrophy
D. Ditrophy

73. 67. Fungi absorb the nutrients from dead organisms.
In an ecosystem what roles do they play?
A. Producers
B. Carnivore
C. Saprophytes
D. Epiphytes

74. 68. Which among the following cell organelles does
NOT participate in cellular division?
A. Ribosomes
B. Chromosomes
C. Mitotic spindle
D. Cytoplasm

75. 69. Which of the following is an example of a
symbiotic relationship?
A. Wolves working together to hunt in a pack
B. Plants growing in the same rolling meadow
C. Humans and their pets living in the same home
D. Weeds clinging to the roots of trees in your
backyard

76. 70. Which of the following is NOT an example of a
naturally – occurring sugar?
A. Sucrose
B. Mitose
C. Glucose
D. Galactose

77. 71. Which of the following is the proper example of natural
selection?
A. Human beings continue to get taller because of
thousands of years of proper nutrition.
B. A community of lady bugs begins having offspring with
darker shells, in order to hide from their predators.
C. Albino rodents die off quickly in a community, being
more vulnerable to certain pancreatic diseases.
D. Seagulls begin to eat so many fish so that only
those with dark blue scale color survive.

78. 72. What is the main difference between prokaryotes and
the eukaryotes?
A. The eukaryote has a nucleus, but the prokaryote
does not have.
B. The prokaryote has a nucleus, but the eukaryote does
not have.
C. The eukaryote is always larger that the prokaryote.
D. The eukaryote is the only type of cell than is capable of
photosynthesis.

79. 73. Which of the following statements is TRUE about
parasites and their relationships with their hosts?
A. The parasite and the host enjoy a natural relationship,
where both organisms benefit.
B. The parasite enjoys the benefits of a relationship in
which the host is harmed or killed.
C. The host enjoys the benefits of a relationship in which
the parasite is harmed or killed.
D. Neither the parasite nor host is really harmed in their
symbiotic relationship.

80. 74. Vascular tissue that transports water in leaves
connects directly to which of the following?
A. Meristems in the root tip
B. Pistils in the flower
C. Root hairs in the epidermis
D. Xylem in the stem

81. 75. One immediate cause of a decrease in the rate of
photosynthesis is a reduction in the availability of
which of the following substances?
A. Carbon dioxide
B. Carbon monoxide
C. Hydrogen
D. Oxygen

82. 76. Which type of digestion occurs in the mouth when
an individual chews a piece of bread?
A. Mechanical digestion only
B. Chemical digestion only
C. Both mechanical and chemical digestion
D. Neither mechanical and chemical digestion

83. 77. Which among the following gases is green color?
A. Krypton
B. Neon
C. Radon
D. Chlorine

84. 78. What does a pH below 7 indicate?
A. Presence of ions
B. Purity of the sample
C. Alkalinity
D. Acidity

85. 79. Which of the following best describes the amount
of energy required to remove an electron from a
gaseous atom?
A. Activation energy
B. Free energy
C. Ionization energy
D. Lattice energy

86. 80. Which among the folowing has the most polar
bond?
A. N2
B. HF
C. F2
D. HCl

87. 81. A molecule or an ion is classified as a Lewis base
if it has which of the following properties?
A. Donates a proton to water
B. Accepts a pair of electrons
C. Has resonance structures
D. Accepts a proton from water

88. 82. Which among the following elements can be
drawn into thin wires and hammered into thin sheets?
A. Ag
B. Na
C. Cu
D. Sn

89. 83. Alchemists in ancient Egypt tested gold for purity
by remelting it and heating it if the gold become
whiter, it contained_____.
A. Copper
B. Lead
C. Silver
D. Tin

90. 84. Salts of which of the following metals are added
tofireworks to make them brilliant red?
A. Copper
B. Barium
C. Potassium
D. Strontium

91. 85. What intermolecular forces do geckos and other
lizards use to stick to walls and ceilings?
A. Van der Waals forces
B. Static ionic attractions
C. Hydrogen bonding
D. Dipole-dipole attractions

92. 86. If no more solute can be dissolved in a solvent at a
given temperature, then that solution is called_____.
A. Saturated
B. Unstable
C. Saturable
D. Dispersed

93. 87. A horizontal row of elements on the Periodic Table
is known a(n)_____.
A. Group or Family
B. Atomic number
C. Size
D. Period or Series

94. 88. According to the modern periodic table law, the
chemical properties of the elements are periodic
functions of their_____.
A. Atomic weight
B. Isotopic weight
C. Atomic number
D. Atomic mass

95. 89. The amount of substance having
6.02 x 1023 of any kind of chemical unit is called
a(n)_____.
A. Mass number
B. Mole
C. Formula
D. Atomic Weight

96. 90. Breaking up solid speeds dissolving in a liquid
by______.
A. Raising the temperature
B. Decreasing the pressure
C. Increasing surface area
D. Slowing hydration

97. 91. Fats do not dissolved in water because
fats______.
A. are polar and water is nonpolar
B. and water are both nonpolar
C. are nonpolar and water is polar
D. and water asre both polar

98. 92. What is the location on the Earth's surface that is
directly above the place where an earthquake
originates?
A. Focus
B. Epicenter
C. Hypocenter
D. Fault

99. 93. If there are several earthquakes in a row, what is
the name of the largest of these earthquakes?
A. Tertiary Shock
B. Foreshock
C. Mainshock
D. Aftershock

100. 94. What is the partially molten layer of the Earth
called?
A. Asthenosphere
B. Biosphere
C. Hydrosphere
D. Lithosphere

101. 95. What part of Earth is thought to be composed of
iron and nickel?
A. Hydrosphere
B. Asthenosphere
C. Lithosphere
D. Core

102. 96. What is the numerical value for the hardest
mineral on the Mohs hardness scale?
A. 10
B. 11
C. 20
D. 100

103. 97. Which among the following properties is a
measure of how easily a mineral can be scratched?
A. Streak
B. Specific gravity
C. Luster
D. Hardness

104. 98. Rock fragments thrown into the air during a
volcanis eruption are called_____?
A. Tephra
B. Extrusive
C. Granite
D. Lava

105. 99. What is a pyroclastic flow?
A. When lava comes out of a volcanic vent?
B. A mixture of volcanic gas, ash and the other
tephra
C. Poisonous gas of a volcano
D. Lava that hardens into a batholith

106. 100. What type of clouds produce thunderstorms?
A. Cirrus
B. Cumulonimbus
C. Cumulus
D. Stratus

107. 101. What is an example of natural air pollution?
A.Smoke from forest fires
B.Carbon monoxide from engine exhaust
C.Dust from desertification
D.Acid percipitation

108. 102. How is oxygen released into the Earth’s
atmosphere?
A.Burning forests
B.Photosynthetic plants
C.Burning fossil fuels
D.Volcanic eruptions

109. 103. Which is TRUE of the earth throughout geologic
time?
A.Always colder than the present
B.Warmer and colder than the present
C.Only warmer than the present
D.A steady temperature

110. 104. Where are most asteroids located?
A.Orbiting all planets
B.Outside of Pluto’s orbit
C.Between earth and Venus
D.Between Mars and Jupiter

111. 105. Before metamorphism, marble was what type of
rock?
A.Schist
B.Rock salt
C.Siltstone
D.Limestone

112. 106. What type of lens is a magnifying glass?
A.Convex
B.Concave
C.Plane concave
D.Plane glass

113. 107. What is the name of the point where light rays
from infinity converge after passing through a lens?
A.Parabola
B.Center
C.Focus
D.Infinity

114. 108. Which of the following is NOT a good heat
insulator?
A.Wood
B.Wool
C.Feathers
D.Iron

115. 109. Bending of light rays when they enter a diffirent
medium is known as ________________.
A.Reflection
B.Refraction
C.Convection
D.Radiation

116. 110. When a spring is released, its potential energy is
converted to _________ energy.
A.Magnetic
B.Electrical
C.Light
D.Kinetic

117. 111. A car is travelling in a circle with a constant
speed. Which statement is TRUE?
A.The car has constant velocity but changing
acceleration.
B.The car has changing velocity but constant
acceleration.
C.The car has changing velocity and changing
acceleration.
D.The car has constant velocity and constant
acceleration.

118. 112. A rock is dropped out of the window of a moving
car. At the same time a ball is dropped from rest from
the same height. Neglecting air resistance, which will
reach the ground first?
A. Rock will hit the ground first
B. Ball will hit the ground first
C. Both will hit at the same time
D. Neither will hit the ground

119. 113. A boy and a girl are riding on a merry-go-round which
is turning at a constant rate. The boy is near the outer rim
and the girl is closer to the centre of rotation. How do the
magnitudes of their accelerations compare?
A. The girl’s acceleration is greater.
B. The boy’s acceleration is greater.
C. The boy and the girl both have zero
acceleration.
D. They both have the same non-zero magnitude
acceleration.

120. 114. A piece of mud flies off the rim of a bicycle wheel. In
what direction will it be going immediately after leaving the
wheel?
A. On a line directly away from the center of the
wheel.
B. On a line at a tangent to the edge of the
wheel.
C. On a curved path moving around the wheel.
D. On a straight line directed somewhere between
the center and the edge.

121. 115. A golf ball is fired at a bowling ball initially at rest and
bounces back elastically. Compared to the bowling ball,
the golf ball after the collision has _________.
A. lower magnitude momentum and less kinetic
energy
B. lower magnitude momentum but more kinetic
energy
C. greater magnitude momentum but less kinetic
energy
D. greater magnitude momentum and more
kinetic energy

122. 116. A boy and a girl riding on a merry-go-round that is
turning. The boy is twice as far as the girl from the merry-
go-round’s center. If the boy and the girl are of equal
mass, which statement is true about the boy’s moment of
inertia with respect to the axis of rotation?
A. It is four times the girl’s.
B. It is twice the girl’s.
C. It is the same for both.
D. The boy has greater moment of inertia with
respect to the axis of rotation.

123. 117. Some children are riding on the outside edge of a
merry-go-round. At the same time, the children all
move towards the center of the merry-go-round. When
they do this, which among the following happens?
A. The angular momentum of the system
stays constant.
B. The moment of inertia of the system stays
constant.
C. The angular velocity of the system stays
constant.
D. The merry-go-round slows down.

124. 118. A convex mirror has focal length f. An object is
placed between
A. virtual and enlarged
B. virtual and reduced in size
C. real and enlarged
D. real and reduced in size

125. 119. Rays that pass through a lens very close to the
principle axis are more sharply focused than those that
are very far from the axis. This spherical aberration helps
us understand which of the following phenomena?
A. We become more far-sighted as we become
older.
B. We become more near-sighted as we
become older.
C. We can only see in black and white in dim
light.
D. It is easier to read in bright light than it is
in dim light.

126. 120. If you lower the frequency of a wave in a string
you will _______.
A. shorten its period
B. lower its speed
C. increase its wavelength
D. lower its amplitude

127. 121. Which is the method that uses organisms to
clean up toxic waste?
A. Bioremediation
B. Carrying capacity
C. Deforestation
D. Monoculture

128. 122. The process of restoring mined land to its original
contours and vegetation is called _______.
A. Bioremediation
B. Recycling
C. Reclamation
D. Reforestation

129. 123. Which is NOT an effect of increased
urbanization?
A.increase of flooding
B.Increasing volume of solid waste
C.Decrease of wetlands
D.Preservation of natural habitats

130. 124. Why are ecosystems with high biodiversity more
stable than those with fewer species?
A.They have higher carrying capacity
B.They have a higher number of species
C.They recover from negative events more quickly
D.They have a higher growth rate.

131. 125. What combine with atmospheric moisture to
create acid precipitation?
A.Carbon dioxide and sulfur dioxide
B.Sulfur dioxide and nitrogen oxide
C.Carbon dioxide and ozone
D.Nitrogen oxides and methane

132. 126. Which one CORRECTLY explains global
warming?
A. an increase in the concentration of ozone
B. A decrease in the amount of deforestation
C. A decrease in Earth’s average surface temperature
D. An increase in Earth’s average surface
temperature

133. 127. Which is an example of a way to improved efficiency
in transportation?
I. Use of fuel efficient, hybrid, or electric cars
II. Carpooling
III. Use of public transportation
A. I, II, III
B. I and II
C. II and III
D. I and III

134. 128. What is the production of two usable forms of
energy at the same time from the same process?
A. Sustainable energy
B. Energy efficiency
C. Conservation
D. Cogeneration

135. 129. How is biogas produced?
A. Conservation of plant and animal waste in a
digester
B. By mixing methane and oxygen
C. Using fertilizer in a digester container
D. Conservation of anaerobic bacteria to carbon
dioxide gas

136. 130. Which is the process in which a heavy nucleus
divides to form smaller nuclei, one or two neutrons,
and a large amount of energy?
A. Radioactive decay
B. Nuclear reaction
C. Nuclear fission
D. Nuclear fusion

137. 131. Iodine is a mineral found in seafood and iodized
salt. Which gland in human body needs iodine for
the regulation of growth?
A. Pancreas
B. Pituitary gland
C. Kidney
D. Thyroid gland

138. 132. Scurvy is caused by the lack of ________.
A. Vitamin B
B. Vitamin E
C. Vitamin C
D. Vitamin A

139. 133. Which of the following parts of digestive system
is CORRECTLY paired with its function?
A. Esophagus – digest carbohydrates
B. Stomach – digest fats
C. Small intestine – absorb water
D. Liver – produces bile

140. 134. A food label on a cereal box gives you the
following information: a serving size equals one cup
and there are 110 calories per serving. You
measure the amount of cereal you plan to eat and
find that it measures 1 ½ cups. How many calories
will you consume?
A. 110 Calories
C. 220 Calories
D. 1,100 Calories
B. 165 Calories

141. 135. Which blood type is regarded as the universal
donor?
A. Type AB
B. Type A
C. Type O
D. Type B

142. 136. What is the largest organ in the human body?
A. Skin
B. Liver
C. Hearth
D. Brain

143. 137. Osteoporosis is a disease that results that results
in weak bones. What foods would you need to eat
to help prevent this disease?
A. vegetables
B. Dairy products
C. Root crops
D. Fish

144. 138. What do you call the device used to measure the
blood pressure of a person?
A. Seismograph
B. Thermometer
C. Stethoscope
D. Sphygmomanometer

145. 139. The process that most living organism perform to
obtain energy from sugar and oxygen is called
_____.
A. breathing
B. respiration
C. digestion
D. glycolysis

146. 140. Breathing is controlled by the part of the brain
called the _______.
A. cerebrum
B. pons
C. medulla oblongata
D. spinal cord

147. 141. Why do seasons occur on Earth?
A. The sun rotate on its axis
B. Earth revolves on its axis
C. Earth’s axis is tilted
D. Earth’s rotates on its axis

148. 142. Which part of the flower develop into fruits?
A. Ovule
B. Ovary
C. Petal
D. Anther

149. 143. Trace the energy transformation when a
flashlight is on.
A. Chemical ---- light----- electrical
B. electrical ---- chemical ----- light
C. chemical ----- electrical ----- light
D. electrical ----- light ----- chemical

150. 144. Which of the following is the unit of structure in all
living things?
A. tissue
B. organ
C. cell
D. muscle

151. 145. Which is the correct sequence of the stage of
mitosis?
A. Telophase, anaphase, metaphase, prophase
B. metaphase, anaphase, Telophase, prophase
C. anaphase, prophase, metaphase, telophase
D. prophase, metaphase, anaphase, telophase

152. 146. The propulsion of jets and rockets is based on
Newton’s Law of ______.
A. Acceleration
B. Interaction
C. Inertia
D. Gravitation

153. 147. Why are shadows formed?
A. Light travels through opaque objects
B. Light is reflected
C. Light is refracted
D. Light travels in a straight line

154. 148. What produces the tremendous energy of the
sun?
A. Nuclear disintegration
B. Nuclear fission
C. Nuclear fusion
D. Nuclear decomposition

155. 149. Which has a highest specific heat?
A. Sand
B. Water
C. soil
D. Wood

156. 150. Sound travels faster in _________.
A. gas
B. liquid
C. solid
D. air

157. 151. Which explains the absence of weather on the
moon?
A.Moon rotates on its axis fast
B.Moon revolves very fast
C.Moon’s gravity is high
D.Moon has no atmosphere

158. 152. Which Law states that heat flows from bodies
at high temperature to one at low temperature?
A.Thermodynamics
B.Energy change
C.Transformation of Energy
D.Retention of Energy

159. 153. Which atomic particle determines the isotope of
an element?
A.Positron
B.Proton
C.Electron
D.Neutron

160. 154. Who proposed the theory of evolution that is
based on natural selection?
A.Watson
B.Darwin
C.Lamarck
D.Mendel

161. 155. What gas is released during photosynthesis?
A.Carbon dioxide
B.Oxygen
C.Nitrogen
D.Hydrogen

162. 156. Which instrument is used to detect earthquake
intensity?
A.Anemometer
B.Barograph
C.Seismograph
D.Clinometer

163. 157. Which of the following radioactive emissions
are arranged in the order of increasing penetrating
power?
A.Alpha, Gamma, Alpha
B.Alpha, Beta, Gamma
C.Gamma, Beta, Alpha
D.Beta, Gamma, Alpha

164. 158. When light falls on soap bubbles, the band of
seven colors seen is due to ____________.
A.Diffraction
B.Reflection
C.Scattering
D.Interference

165. 159. Why can mirrors from clear images?
A.Light is regularly refracted
B.Light is irregularly reflected
C.The angle of incidence is equal to angle of
reflection.
D.The angle of reflection is equal o the angle of
refraction.

166. 160. Why do we see the sun rising in the east?
A.Earth rotates from west to east
B.Earth revolves from east to west
C.Earth rotates from east to west
D.Earth’s axis is tilted.

167. 161. A community of living organisms interacting with
their nonliving environment constitutes a/an
_________________.
A.Population
B.Ecosystem
C.Species
D.Biosphere

168. 162. Choose a possible food chain.
A.Corn-----rat-----cat
B.Corn----man----cat
C.Rice----rat------man
D.Rice----cat-----rat

169. 163. In the energy pyramid which is the highest point?
A.Second order produces
B.Producers
C.First order consumers
D.Third order consumers

170. 164. Which of the following pairs demonstrates
symbiosis?
A.Man and lice
B.Monkey and banana
C.Chick and corn plant
D.Butterfly and bean flower

171. 165. The zigzag road to Baguio represents which kind
of simple machine?
A.Lever
B.Wheel and axe
C.Wedge
D.Inclined plane

172. 166. Why does the mercury in a thermometer rise when
in contact with hot water?
A.Heat increases the number of molecules.
B.Heat makes molecules become bigger and farther
apart.
C.Heat makes molecules move faster and farther
apart.
D.Heat makes the molecules move slower.

173. 167. Which blood type is a universal donor?
A.A
B.O
C.AB
D.B

174. 168. Which nerve transmits the message received to
the center of hearing in the brain?
A.Sensory
B.Optic
C.Olfactory
D.Auditory

175. 169. Which disease affects the air sacs of the lungs
and is common among cigarette smokers?
A.Asthma
B.Tuberculosis
C.Emphysema
D.Tracheal disorder

176. 170. Which type of joint is responsible for bending our
arms and legs?
A.Hinge
B.Pivot
C.Ball and socket
D.Sliding

177. 171. Which protein found in the plasma is responsible
for blood clotting?
A.Globulin
B.Albumin
C.Serum
D.Fibrinogen

178. 172. Which part of the brain is responsible for
memory and intelligence?
A.Cerebellum
B.Cerebrum
C.Medulla
D.Thalamus

179. 173. The Philippines belong to a type of biome called
__________________.
A.Deciduous forest
B.Taiga
C.Tropical rainforest
D.Grassland

180. 174. The factors that significantly contribute to an
increase in human population are ______________.
A.Immigration and natality
B.Emigration and natality
C.Immigration and mortality
D.Emigration and mortality

181. 175. What is the common cause of the temporary
wilting of plants at noon?
A. Increased condensation
B. Rapid respiration
C. Rapid transpiration
D. Increased oxidation

182. 176. How can we identify a dicot leaf from a
monocot leaf?
A. A dicot has a smooth surface.
B. A dicot leaf has netted venation.
C. A dicot leaf has parallel venation.
D. A dicot has a wide margin.

183. 177. When the stems of the vines grow around
poles of the fences, what kind of the reponse is
exhibited?
A. Geotropism
B. Thigmotropism
C. Hydrotropism
D. Phototropism

184. 178. Which of the following is the greatest
contributor to our “greenhouse effect" ?
A. Increase of oxygen
B. Leaching of the soil
C. Increase of herbivores
D. Cutting the forest trees

185. 179. Why does a tree slowly die when its bark all
around it is removed?
A. The cambium is injured.
B. The phloem vessels are cut.
C. The tree cannot manufacture food.
D. Its protective layer is cut.

186. 180. Which is the method of growing vegetables
and low plants in a nutrient-packed, aerated solution
with no soil at all?
A. Vegetative cultivation
B. Natural farming
C. Hydroponics
D. Aerial cultivation

187. 181. When you carry a heavy load with one arm,
you tend to hold your free hand away from your
body in order to__________.
A. change the weight of your body and load
B. change the mass of your body
C. be ready to grab something in case you fall
D. change the center of gravity of your body
and load

188. 182. Why are door knobs placed at the edge of a
door rather than in the center?
A. To increase the lever arm
B. To increase the force on the door
C. To help give more momentum to the door
D. Closer to the edge of the doorway

189. 183. Why is a dam built wider at the bottom than at
the top?
A. To withstand the greater pressure at the
bottom
B. To balance the pressure at the top
C. It holds up the dam better than at the center.
D. It anchor the dam better.

190. 184.Archimedes' principle state that an object is
buoyed up by a force that is equal to the
___________.
A. volume of the fluid
B. weight of the fluid displaced
C. mass of the fluid displaced
D. mass of the object

191. 185. When an ice cube in a glass of water melts, the
water level ___________
A. falls
B. remains the same
C. rises and spills
D. varies

192. 186. Two pots of the same size are filled with
boiling water. One pot is colored white and the
other is black. In which pot will water cool faster?
A. Will cool at the same rate
B. In white pot
C. In black pot
D. In both pots

193. 187. You inherited tallness from your father.
Physical traits are transmitted from parents to
offsprings through___________,
A. gametes
B. chromosomes
C. alleles
D. genes

194. 188.The handle of a spoon dipped in a cup of a
hot water becomes warm. What is the method
of heat transfer?
A. Condensation
B. Radiation
C. Convection
D. Conduction

195. 189. The force required to maintain an object at a
constant speed in free space in equal to_________.
A. the weight of the object
B. the mass of the object
C. zero
D. the force required to stop it

196. 190. Two people pull on a rope in a tug-of-war, each
pull with a 400 N force. What is the tension in the
rope?
A. 800 N
B. 600 N
C. 400 N
D. 200 N

197. 191. Why does a pressure cooker cook food faster?
I. Water boils faster.
II. It raises the boiling point of water.
III. It raises the cooking temperature of food.
IV. It is tightly closed.
A. II and III
B. I, II and IV
C. I, II and III
D. II and IV

198. 192. You noticed that big industries have tower-
like tall stacks. What is the structure for?
A. To control emission of hazardous gases
B. To include rain and air pressure
C. To get enough air from the atmosphere
D. To make the interior cool

199. 193. Steam burns are more damaging than burns
caused by boiling water because steam
_________?
A. has a higher temperature than boiling water
B. has more energy per kilogram than boiling
water
C. is vapor of water molecules during boiling
D. occupies more spaces that water during boiling

200. 194. The removal of broken pieces of rocks from
the parent rock by the action of wind or water is
termed _________
A. erosion
B. deposition
C. I, II and III
D. silting

201. 195. The voltage across a transformer primary coil
that has 100 turns is 10 V. What is the voltage
across the secondary coil which has 20 V turns?
A. 100 V
B. 10 V
C. 2 V
D. 20 V

202. 196. Trace the conversion of energy that occurs
when plants manufacture food.
A. Radiant energy to chemical energy
B. Radian energy to kinetic energy
C. Mechanical to potential energy
D. Light energy to kinetic energy

203. 197. Riders in a bus are pushed forward during a
sudden stop. Which law of motion provides an
explanation?
A. Law of Inertia
B. Law of Interaction
C. Law of Universal Gravitation
D. Hooke's law

204. 198. What type of eclipse occurs when the moon is
directly between the sun and the earth?
A. Partial Lunar
B. Lunar
C. Stellar
D. Solar

205. 199. In our daily weather forecast, the region
where two tropical wind systems coverage,
characterized by showers and widespread
thunderstorm called ___________.
A. warm and cold fronts
C. Stellar
B. intertropical convergent zone
D. local disturbance zone

206. 200.While traveling at night, you lost direction. Which
star should you look for and in what constellation?
I. Polaris
II. Rigel
III. Ursa Minor
IV. Ursa Major
A. I and IV
B. I and III
C. II and III
D. II and IV

207. 201. At present, a patient fights either by surgery or by
drug called ________.
A. irradiation
B. viral treatment
C. chemotherapy
D. immune therapy

208. 202. The U.S. was able to produce a test-tube baby
through a process called ________.
A. gene pairing
B. internal fertilization
C. protoplast fusion
D. in vitro fertilization

209. 203. Patients suffering from malfunctions of the kidney
are now assisted by a machine that serves as
artificial kidney called __________.
A. hemoscope
B. pacemaker
C. hemodializer
D. homeostatic machine

210. 204. The sun appear more reddish at sunset than at
noon. Which of the following phenomena is
responsible for this effect?
A. Dispersion
B. Reflection
C. Scattering
D. Interference

211. 205. Why do we hare thunder some seconds after the
lightning?
A. Light travels faster than sound.
B. Sound travels at 1,331 m/s
C. Sound is released later actually.
D. Light appears higher in the sky.

212. 206. Which is/are (an) advantage/s of the coming of
Genetically Modified Organisms (GMO)?
I. Improved resistance of plants to diseases, pests and
herbicides
II. Increased maturation time of fruits
III. Enhanced taste and quality
A. II and III
B. I and III
C. I and II
D. I only

213. 207. Which is one disadvantage of Genetically
Modified Organisms (GMO)?
A. Potential health impacts like allergies
B. Reduced maturation time
C. Fast food production
D. High cost of GMO food items

214. 208. In the desire of governments to control
population growth, which one is highly promoted?
A. The use of natural birth control methods
B. The use of artificial birth control methods
C. Early marriage
D. “Balik Probinsya” program

215. 209. How may the establishment of housing subdivisions
to address housing problems contribute to decreased of
food production?
A. Men get occupied with construction and leave their
farms untilled
B. Arable lands are reduced for these are converted
into housing subdivisions
C. Housing division become overcrowded
D. People who flocked to the center where most
subdivisions are located have no skills.

216. 210. The use of plastic bags, disposable cups, plates,
spoons, diapers, etc. makes life more convenient.
However, as a result what problems has / have come
about?
I. Heaps of solid garbage
II. Floods
III. Epidemic
A. I and III
B. II and III
C. I, II, and III
D. I and II

217. 211. The use of pesticides may increase crop yield but
_____.
I. contributes to air pollution
II. causes water pollution
III. brings about pest resistance
A. I, II, and III
B.II and III
C. I and II
D. I and III

218. 212. A nuclear power plant may solve perennial brown
outs but may bring about problems like ______.
I. thermal pollution
II. water pollution
III. release of radiation
A. I only
B. II and III
C. I and II
D. I and III

219. 213. Endangered species are species which are
threatened due to ______.
A. habitat destruction
B. extinction of species
C. mutation
D. domestication

220. 214. If we experience greenhouse effect we shall have?
I. warmer climate
II. increase in the level of CO2 in the atmosphere
III. cooler climate
IV. increase in the level of O2 in the atmosphere
A. I
B. I and II
C. II and IV
D. II

221. 215. One consequence of global warming is coastal
flooding because of the_______ which is in turn caused
by _________.
A. el niño phenomenon - changed precipitation pattern
B. melting of the ice caps – the rising of the sea level
C. rising of sea level – the melting of the ice caps
D. la niña phenomenon - change in precipitation
pattern

222. 216. The contributory factors to acid rain are the use
of __________.
A. fossil fuels
B. pesticides
C. nuclear energy
D. refrigerants

223. 217. The thinning down of the ozone layer is believed
to cause _________.
A. heat stroke
B. baldness
C. ulcer
D. skin cancer

224. FOR ITEMS 218 -222
At Malaya Farms, a swarm of locusts and insects have
been infesting the rice fields. This has forced some local
farmers to stop the farming process until a solution has been
done. Meanwhile, in the adjacent barrio, an outbreak of
Malaria is ongoing. With all these insect borne problems
happening in his locale, the city mayor has decided to initiate
a pesticide intervention to solve his town problems.
Considering their own budget, the city council is
contemplating on the use of dichlorodiphenyltrichloroethane
(DDT) to eradicate the insect plaguing the municipality.

225. 218. Which among the following is an expected effect of
DDT on the insect plaguing the town?
A. DDT will act as a contact poison on the
swarming insect.
B. DDT will increase fertility of the soil so that plants
can grow.
C. DDT will cause the insect to develop cancer and
die.
D. DDT will make the insects infertile and prevent their
multiplication.

226. 219. Which among the following is an expected effect on
the natural ecosystem of the town?
A. DDT has no effect on natural wildlife.
B. DDT will cause increased fertility among chickens.
C. DDT is reproductive toxicant causing ecosystem
disruption.
D. DDT will cause pronounced carcinogenicity among
the farmers.

227. 220. Which among the following are expected effects of
DDT on the health of people living in the town?
I. Severe kidney damage
II. Diabetes milletus
III. Breast cancer
A. I, II and II
B. I and II
C. III only
D. I only

228. 221. Which alternatives to pesticides may be
suggested to eradicate the insects causing Malaria
in this region?
A. Cultivation of snails.
B. Eradicating insect breeding pools
C. Use of insecticide-treated bednets
D. Vaccination against malaria

229. 222. Which alternatives to DDT may be suggested to
control the swarm of insects ravaging the rice
fields?
A. Cultivation of frogs
B. Fumigation
C. Relocation of rice plantation sites
D. Use of malathion or parathion

230. FOR ITEMS 223 - 227
The town of Pulang Bato is experiencing a surge in
population growth. Epidemiologic study has revealed that the
rate of teenage pregnancies in their locality is increasing at
an alarming rate. City health officials have expressed
concerns over this matter. They intend to launch a safe sex
campaign advocating the use of artificial method of
contraception like condom and pills. The local Church
vehemently opposing this move by city government
advocating only the use of natural contraception like the
rhythm method.

231. 223. Which among the following methods of
contraception has the least success rate?
A. Birth control pills
B. Condoms
C. Ryhtm Method
D. Intrauterine device

232. 224. Based on cost benefit analysis, which of the
following methods of population control would be
the most appropriate if the town only had limited
funds?
A. Oral contraceptive pills
B. Barrier contraception
C. Intrauterine device
D. Injectable contraceptives

233. 225. Which intervention should be advocated to address
the problem among teenagers?
A. Forums on safe sex and population education in
school.
B. Conducting population education seminar for the
parents.
C. Offering abortion to interested parties
D. Accepting that there is no way to control teenage
pregnancies.

234. 226. Which among the following is an expected long
term complication on women’s health in the town if
safe sex practices are not initiated?
A. Increased incidence of ectopic pregnancy
B. Increased incidence of suicide among females
C. Increased incidence of diabetes milletus and
hypertension
D. Increased incidence of cervical cancer

235. 227. Which among the following is the only method of
contraception that has 100% success rate?
A. Injectable contraceptives
B. Withdrawal method
C. Abstinence
D. Daily oral contraceptive pill

236. FOR ITEMS 228 - 232
The Bataan Nuclear Power Plant is a nuclear power plant
based in Morong Bataan, Philippines. It was commissioned by
President Ferdinand Marcos and building commenced in 1976.
The plant construction was completed in 1984. When Marcos
was overthrown and replaced by Corazon Aquino, nuclear
power plant project was scrapped. A major concern is that the
nuclear power plant is located in an area where earthquakes
likely to occur. To this day, the Bataan Nuclear Power Plant has
remained unused. Up until April 2007, the Philippine
government had to pay 155,000 dollars every day to pay the
loan that the funded the power plant.

237. 228. The following are known advantages of the
nuclear power EXCEPT ______.
A. decrease release of greenhouse gases
B. increased reliance on fossil fuels
C. astronomical amounts of energy generations
D. decreased cost of energy generation

238. 229. Which among the following represents the single
most important deterrent for the use of nuclear
power?
A. Disposal of radioactive wastes.
B. Possibility of nuclear accidents.
C. Scarcity of radioactive elements
D. Time frame needed for formalities, planning, and
building a new nuclear power plant.

239. 230.Nuclear power relies on which of the following
chemical reactions?
A. Nuclear fusion
B. Binary fission
C. Chemiosmosis
D. Nuclear fission

240. 231. Which among the following is the single most
important effect of radiation debate against nuclear
power?
A. Chernobyl accident
B. Minamata accident
C. Haiti incident
D. Ormoc tragedy

241. 232. Which among the following is the single most
important effect of radiation exposure on human
health?
A. Hypertension
B. Cancer
C. Heart disease
D. Skin, muscle and bone problems

242. FOR ITEMS 233 - 237
Waste disposal is a huge challenge for the urban
municipality of Metropolis. It’s expensive and time
consuming to collect millions of tons of trash every
year, and there are risk to the environment no matter
how waste disposal is done. The city government is
presently determining which method of waste
disposal is best suited for the municipality.

243. 233. Which among the following is NOT a suitable
option for waste disposal in this city?
A. Vaporization
B. Landfills
C. Incineration
D. Recycling

244. 234. The following are possible adverse effect of the
sanitary landfills EXCEPT _____.
A. pollution of local environment
B. fatal accidents (scavengers buried under waste
piles)
C. decreased amount of disease vectors
D. dust, odor, and noise pollution

245. 235. Which is the single most important deterrent on
the use of incinerators for garbage disposal?
A. Heavy metal toxicity
B. Dioxin and furan emission
C. Highly toxic ashes flying around incinerator site
D. Cost of operations

246. 236. The following are solid waste products which
can be recycled, EXCEPT ____.
A. leftover food
B. pet bottles
C. beverage cans
D. PVC materials

247. 237. At the level of people’s home, which among the
following interventions can best help in solid waste
management?
A. Backyard burning of trash
B. Composting
C. Four-o’clock habit
D. Trash sorting prior to disposal

248. Prepared by:
Jotojot, Cindy Jay
Mohinog, Arrhiane
Tumulak, Marianne Jade
Carbonilla, Rizamae
Macadine, Richard
Socorro, Jayrald
Belar, Racelmae
Gandeza, Honelyn
Sanchez, Irah
Gumanayan, Julio