Foundation Level III NEET Mock Test-6 ( Chemistry)

 Which substance give heat and light after combustion?

  

• Flame

• Fuel

• Combustion

• None of these

Burning of charcoal in a closed room will produce

     

• Carbon dioxide

• Nitrogen dioxide

• Carbon monoxide

• All of these

 The substances which have very low ignition temperature will

    

• Catch fire easily

• Will not catch fire

• Catch fire after some time

• None of these

  CNG and LPG are the examples of______

    

• Solid fuels

• Liquid fuels

• Gaseous fuels

• They are not fuels

Combustion is a_____

    

• Chemical process

• Physical process

• Both of these processes

• None of these processes

Combustion of a substance releases heat and ___.

• Oxygen

• Wood

• Light

• Water

What is the main chemical component present in striking surface of a matchbox?

• Potassium chlorate

• Phosphorus

• Potassium

• Graphite

When a cracker is ignited, a sudden reaction takes place with the evolution of heat, light and sound. Identify the type of combustion?

• Random combustion

• Rapid combustion

• Spontaneous combustion

• Explosion

The combustion reaction which occurs on its own, without any external supply of heat is called as:

• Explosion

• Spontaneous combustion

• Fire

• Rapid combustion

The middle zone of a candle flame is also called the zone of ______ combustion.

• Spontaneous

• Rapid

• Partial

• Complete