Contents

Combustion:

Combustion, or burning, is a high-temperature exothermic redox chemical reaction between a fuel and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke.


Combustion is referred to what we call……..
a) fermentation                   

b) sublimation
c) burning                                            

d) precipitation


c

A chemical process where fuel reacts with air to heat and light energy is called…….
a) fermentation                   

b) sublimation
c) combustion                     

d) precipitation

c

In which of the following, combustion is used?
a) in rocket engines                            

b) in cars
c) in machinery                   

d) all of these

d

Which of the following main gas is produced during complete combustion of fuel?
a) carbon dioxide                              

b) nitrogen            
c) carbon monoxide                           

d) oxygen

a

Which of the following main gas is produced during incomplete combustion of fuel?
a) carbon dioxide                               

b) carbon monoxide
c) nitrogen                                            

d) oxygen

b