4.combustion

Question 1

Whw is combustion

Answer 1

A chemical process in which a substance reacts with oxygen to give off heat is called combustion

Question 2

Imflamable substance

Answer 2

The time which have very low ignition temperature.easily catch fire

Question 3

Best fire extinguisher for electrical and petrol diesel

Answer 3

Co2 fire extinguisher

Question 4

Calorific value

Answer 4

The amount of heat energy produced on complete combustion of 1 kg of fuel

Question 5

calorific value of fuel is expressed in

Answer 5

Kilojoul per kg

Question 6

Burning of coal and diesel releases

Answer 6

Sulphur dioxide gas

Question 7

Petrol engine releasing which gas

Answer 7

Nitrogen oxide

Question 8

Chemical of acid rain

Answer 8

Sulphur and nitrogen oxide