2. Types of fire
 The National Fire Protection Association (NFPA)
classifies fires into five general categories.
1)Class A fires are ordinary materials like burning paper,
lumber, cardboard, plastics etc.
2)Class B fires involve flammable or combustible liquids
such as gasoline, kerosene, and common organic
solvents used in the laboratory.
3)Class C fires involve energized electrical equipment,
such as appliances, switches, panel boxes, power tools,
hot plates and stirrers.

3. 4)Class D fires involve combustible metals, such as
magnesium, titanium. These materials burn at high
temperatures and will react violently with water, air,
and/or other chemicals.
5)Class K fires are kitchen fires. This class was added to
the NFPA portable extinguishers Standard 10 in 1998.

4. Types of fire extinguisher

5.  1) water extinguisher :- are suitable for class A (paper,
wood etc.)
 2) Dry chemical extinguishers are useful for either
class ABC or class BC fires.
There are two kinds of dry chemical extinguishers:
I)Type BC fire extinguishers contain sodium or
potassium bicarbonate.
II)Type ABC fire extinguishers contain ammonium
phosphate.

6.  3) CO2 (carbon dioxide) extinguishers are for class B
and C fires.

7.  4)Metal/Sand Extinguishers are for flammable
metals (class D fires) and work by simply smothering
the fire.

8. European emission standards

9.  European emission standards define the acceptable
limits for exhaust emissions of new vehicles sold in EU
member states.
 The stages are typically referred to as Euro 1, Euro 2, Euro
3, Euro 4 and Euro 5 fuels for Light Duty Vehicle
standards. The corresponding series of standards for
Heavy Duty Vehicles use Roman, rather than Indian
numerals (Euro I, Euro II, etc.)

10. Types of euro and their application:-
 Euro 1 (1993): For passenger cars and light trucks .
 Euro 2 (1996) for passenger cars and For motorcycle
 Euro 3 (2000) for any vehicle.
 Euro 4 (2005) for any vehicle
 Euro 5 (2008/9) and Euro 6 (2014) for light passenger
and commercial vehicles .