Combustion

Name the most common fuel used in homes.

• Petrol

• Kerosene

• Liquified Petroleum Gas

• Wax

Name an ideal fuel

What is the unit for expressing the calorific value of a fuel?

• m/sec

• KJ/Kg

• Kg/Kj

• Kg

Does magnesium produce heat and light during its combustion?

• True

• False

__________ is the fuel for our body.

Identify the luminous zone in the given picture

• A

• C

• B

• None

The substance which ________ during burning give flames,

• Heats

• Vaporise

• Boils

• Melts

Combustion is a

• Chemical process

• Physical process

• Both of these processes

• None of these processes

The products of combustion are

• Carbon dioxide and water

• Oxygen and water

• Only oxygen

• Only water

Lowest temperature at catch fire is called ,________