2. SECTION – I (Total Marks :50) Single Correct Answer Type There are five parts in this question. Four choices are given for each part and one of them is correct. Indicate you choice of the correct answer for each part in your answer-book by writing the letter (a), (b), (c) or (d) whichever is appropriate
3. 01 Problem Which of the following is an inert gas? H2 O3 N2 argon
4. Problem 02 If 0.1 M of a weak acid is taken, and its percentage of degree of ionization is 1.34%, then calculate its ionization constant. 0.8 x 10-5 1.79 x 10-5 0.182 x 10-5 none of these
5. Problem 03 If a substance with half life 3 days is taken at other place in 12 days. What amount of substance is left now? 1/4 1/8 1/16 1/32
6. Problem 04 To prepare a solution of concentration of 0.03 g/ml of AgNO3 , what amount of AgNO3 should be added in 60 ml of solution? 1.8 0.8 0.18 none of these
7. Problem 05 How will you separate a solution (miscible) of benzene + CHC13? sublimation filtration distillation crystallisation
8. Problem 06 When alcohol reacts with concentrated H2SO4 intermediate compound formed is carbonium ion alkoxy ion alkyl hydrogen sulphate none of these
9. Problem 07 According to law of mass action rate of a chemical reaction is proportional to concentration of reactants molar concentration of reactants concentration of products molar concentration of products
10. Problem 08 In Hall's process, the main reagent is mixed with NaF Na3AIF6 AlF3 none of these
11. Problem 09 In electrolysis of dilute H2SO4 , what is liberated at anode? H2 SO4 SO2 O2
12. Problem 10 A gas can be liquefied above its critical temperature at its critical temperature below its critical temperature at any temperature
13. Problem 11 Which of the following is hypnotic? acetaldehyde paraldehyde metaldehyde none of these
14. Problem 12 By which of the following process permanent hardness of water can be removed? soda lime sodium bicarbonate washing soda sodium chloride
15. Problem 13 Vinegar obtained from sugarcane has CH3COOH HCOOH C6H5COOH CH3CH2COOH
16. Problem 14 What is the packet of energy called? electron photon positron proton
17. Problem 15 When an acid cell is charged, then voltage of cell increases electrolyte of cell dilutes resistance of cell increases none of these
18. Problem 16 NaOH is prepared by the method Down's cell Castner cell Solvay process CastnerKellner cell
19. Problem 17 When toluene is treated with KMnO4, what is produced? benzene chlorobenzene benzaldehyde benzoic acid
20. Problem 18 Solder is an alloy of 70% lead, 30% tin 30% lead, 70% tin 80% lead, 20% tin 90% Cu, 10% tin
23. Problem 21 The group linkage present in fats is peptide linkage ester linkage glycosidic linkage none of these
24. Problem 22 The group present in waxes are Acid group Ester group Alcohol group Ether group
25. Problem 23 Which of the following is liquid at room temperature? CH3I CH3Br C2H5C1 CH3F
26. Problem 24 Which gas is liberated when AI4C3 is hydrolysed? CH4 C2H2 C2H6 CO2
27. Problem 25 The only alcohol that can be prepared by the indirect hydration of alkene is Ethyl alcohol Propyl alcohol Isobutyl alcohol Methyl alcohol
31. Problem 29 A colourless gas with the smell of rotten fish is H2S PH3 SO2 None of these
32. Problem 30 Salicylic acid is prepared from phenol by Reimer Tiemann reaction Kolbe's reaction Kolbe-electrolysis reaction None of these
33. Problem 31 Lucas test is done for Alkyl halides Alcohols Acids Aldehydes
34. Problem 32 Hydrogen can be fused to form helium at High temperature and high pressure High temperature and low pressure Low temperature and high piessure Low temperature and low pressure
35. Problem 33 When CO2 is bubbled through a solution of barium peroxide in water O2 is released Carbonic acid is formed H2O2 is formed No reaction occurs
36. Problem 34 The most important ore of tin is Cassiterite Cryolite Cerussite None of these
37. Problem 35 Heating of ore in presence of air to remove sulphur impurities is called Calcination Roasting Smelting None of these
38. Problem 36 CaCO3 CaO + CO2 reaction in a line goes to completion because CaO does not react to CO2 to give CaCO3 Backward reaction is very slow CO2 formed escapes out None of these
39. Problem 37 If 30 ml of H2 and 20 ml of O2 reacts to form water, what is left at the end of the reaction? 10 ml of H2 5 ml of H2 10 ml of O2 5 ml of O2
40. Problem 38 Which of the following is a highly corrosive salt? FeCl2 PbCl2 Hg2Cl2 HgCl2
41. Problem 39 0.5 M of H2SO4 is diluted from 1 litre to 10 litre, normality of resulting solution is 1 N 0.1 N 10 N 11 N
43. Problem 41 Which of the following is potassium ferricyanide? K4[Fe(CN)6] K3[Fe(CN)6] K3[Fe(CN)3] K3[Fe(CN)4]
44. Problem 42 Sodium nitroprusside when added to an alkaline solution of supplied ions produce a Red coloration Blue coloration Purple coloration Brown coloration
45. Problem 43 The product obtained on reaction of C2H5C1 with hydrogen over palladium carbon is C3H8 C4H10 C2H6 C2H4
46. Problem 44 A solution has pH = 5, it is diluted 100 times, then it will become Neutral Basic Unaffected More acidic
47. Problem 45 Ketones react with Mg-Hg over water gives Pinacolone Pinacols Alcohols None of these
48. Problem 46 X is heated with soda lime and gives ethane. X is Ethanoic acid Methanoic acid Propanoic acid Either (a) or (c)
49. Problem 47 Which is used to produce smoke screens? Calcium phosphide Zinc sulphide Sodium carbonate Zinc phosphide
50. Problem 48 The conversion of maltose to glucose is possible by the enzyme Zymase Lactase Maltase Diastase
51. Problem 49 The product obtained on fusion of BaS04 and Na2CO3 is BaCG3 BaO Ba(OH)2 BaHSO4
52. Problem 50 A 5 molar solution of H2SO4 is diluted from 1 litre to 10 litres. What is the normality of the solution? 0.25 N 1 N 2 N 7 N
