EASY
Earn 100

Which of the following is not required for combustion to take place?

50% studentsanswered this correctly

Important Questions on Chemistry in Daily Life

EASY
Blisters and ulcers occur in the case of _____.
EASY
Fill in the blank with the correct options from the box.
_____ is used to extinguish the fire that involves electrical equipment.
Carbon dioxide Carbon monoxide Ignition temperature Water Low
Kilojoule per kg (kJ/kg) Nuclear Spontaneous Hotter Blue, yellow
EASY
The most common supporter of combustion around us is _____. (Mention the name of the mixture which is necessary for our survival.)
EASY

The lowest temperature at which a substance catches fire is called its _____ .

MEDIUM
Water is not suitable for fire caused due to _____. (fireworks / electrical short circuit)
EASY
The soda-acid fire extinguisher gives out _____ to extinguish a fire. (carbon dioxide/ carbon monoxide)
MEDIUM
For the burning of fuel, which of the following gas is necessary?
MEDIUM
Never put out a fire caused by oil with _____.
MEDIUM

The type of flame produced by a fuel depends on the proportion of _____ available for burning the fuel.

 

Choose correct word from below:

Red, white              Spontaneous             Pinewood             Oxygen             Rapid

MEDIUM
The fire produced by burning oil cannot be controlled by _____.
MEDIUM

Fill in the blank with an appropriate word:

The fire caused by electricity should be put off by _____ (Water/ Sand).

EASY
_____ is essential for combustion. (Air/ Water)
EASY
Cutting off air helps to put out a _____. (rain/fire)
EASY
Decomposition of potassium hydrogen carbonate releases_____ gas.
EASY
_____ should never be used in case of an electrical fire.
HARD

Fill in the blank with the correct options from the box.
Fire caused by oil cannot be extinguished with _____.

Carbon dioxide Carbon monoxide Ignition temperature Water Low
Kilojoule per kg kj/kg Nuclear Spontaneous Hotter Blue, yellow
EASY
_____ is the technique to put out a fire on our clothes. (Give proper indentation) [Stop, drop and roll/ Run and jump in water]
EASY
Fire produced by oil cannot be controlled by _____. (sand/water)
MEDIUM
Carbon dioxide is used to extinguish fire because it is not a _____ of burning.
EASY
Fuel, air and _____ are the necessary requirement for the combustion.