Exercise 5. Correlate extinguishing agents (A) with types of extinguishers (C) using one of the synonymous verbal forms (B)

A Sodium bicarbonate Halon Chemicals based on a solution of potassium acetate Water spray, water mist, AFFF, FFFF Carbon dioxide Dry copper, dry graphite Ammonium phosphate

C carbon dioxide extinguishers multi-purpose dry chemical extinguishers water-based extinguishers ordinary dry chemical extinguishers wet chemical extinguishers halogenated extinguishers special powder extinguishers

B is/are contained in is/are employed in

Exercise 6. Complete the following statements (classification of fires is given under NFPA standard) choosing appropriate variant/s.

1) Carbon dioxide extinguishers are rated for Classes....

a) A and B fires

b) B and C fires

c) B and D fires

2)... extinguishers are safe in fighting electrical fires.

a) foam

b) water

c) carbon dioxide

3) Wet chemical extinguishers are based on a solution of....

a) sodium bicarbonate

b) potassium acetate

c) sodium chloride

4) Foam extinguishers are not listed for Class...

a) A fires

b) B fires

c) C fires

Exercise 7. Match types of extinguishers given in the table for each Class of fires.

Type of Extinguisher	A	B	C	D	K
Water
Foam (AFFF, FFFF)
Multi-Purpose Dry Chemical
Ordinary Dry Chemical
Special Powder
Wet Chemical
Carbon Dioxide
Halon