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Question

Which of the following statement is not correct?
Air is essential for the burning process
The flame of a burning candle can be put off by placing a cover cap over the flame
Burning of coal cannot be stopped by covering it with sand
Burning of wood can be stopped by covering it with sand

A

Air is essential for the burning process

B

The flame of a burning candle can be put off by placing a cover cap over the flame

C

Burning of coal cannot be stopped by covering it with sand

D

Burning of wood can be stopped by covering it with sand

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Solution

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The correct option is C Burning of coal cannot be stopped by covering it with sand
The burning of coal can be stopped by covering it with sand. When sand is thrown over burning kerosene oil, the sand covers it like a blanket. The sand cuts off the air supply to the burning kerosene oil due to which the fire gets extinguished.

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