Click the correct answer (True or False).
Click the correct answer.
What should a good fuel have?
Low ignition temperature
High calorific value
Low cost and easy availability
All of them
Which of the following is not a condition for combustion?
Oxygen
Ignition temperature
Combustible substance
Carbon dioxide
In carbon dioxide based fire extinguishers, carbon dioxide is present in which form?
Liquefied and compressed form
Powdered sodium bicarbonate form
Powdered potassium bicarbonate form
All of them
When a wax candle burns, which part of it catches fire
Wick
Wax vapour
Liquid wax
Solid wax
Click the correct answer.
The solid fuel used for cooking in rural areas is
.
cow dung cakes
benzene
leaves
kerosene
Liquid hydrogen is used as fuel in
.
spacecrafts
cars
trucks
airplanes
Complete combustion of most of the fuels produces
which is responsible for global warming.
carbon dioxide
nitrogen
oxygen
argon
No combustion takes place in the
of a candle flame because of lack of oxygen.
innermost zone
outermost zone
middle zone
wax
