Combustion

IMPORTANT

Combustion: Overview

This topic covers concepts, such as, Combustion, Combustible Substances, Fire & Fuel etc.

Important Questions on Combustion

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What is combustion? Give examples?

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Write any three scientific factors which supports an object to burn.

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If we place a glass on top of a candle the candle will not burn then how does lantern work.

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Which of these is not true for combustion?

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Why wood burns on heating instead of melting?

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What do you understand by the 'flash point' of a fuel?

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We can live our life without fire, it is not necessary thing in our life.

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Why fire is so important in our life?

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A chemical reaction in which substance reacts with carbon dioxide to gives off heat is called combustion.

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Which of the following is not required for combustion?

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What all are the things required for combustion?

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The efficiency of a wood stove is maximum.

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Which of the following substance is non-combustible?

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The substances which catch fire easily in the presence of oxygen are called

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Red phosphorus catches fire at room temperature.

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For combustion to occur, the presence of air is necessary.

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When water is poured into a paper cup and heated, the paper does not burn.

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Give substances which burn (flammable) and which do not (non-flammable).

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In each group of words, pick the odd one out. Give the other words a group name which tells what all of them are.

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In the liquid state, hydrogen is used as a fuel in _____ (nuclear power plant / spacecraft).