The process of burning of compounds in air to give carbon dioxide, water, heat and light is known as combustion. Most of the carbon compounds burn in air to produce a lot of heat.

The burning of a combustible substance in the presence of air or oxygen to release heat, light and carbon dioxide is known as combustion. For example, wood is burnt in the presence of air to release heat.

EASY

Earn 100

Name the chemical reaction in which heat is evolved.

Important Questions on Chemical Changes and Reactions

MEDIUM

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

The colour of

{NO}_{2}

and

PbO

formed when lead nitrate is heated are:

MEDIUM

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

Can the process of rusting be called combustion? Discuss.

EASY

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

Give an example of an endothermic reaction.

MEDIUM

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

Why do forest fires occur more frequently during summers?

MEDIUM

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

Differentiate between Complete and incomplete combustion

MEDIUM

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

_____ supports burning. (Oxygen/ Carbon dioxide)

MEDIUM

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

Define burning. What are the different conditions for burning to take place?

MEDIUM

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

Can the process of rusting be called combustion? Give reason for your answer.

MEDIUM

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

Combustion consumes oxygen and releases carbon dioxide.

MEDIUM

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

Distinguish between combustion and oxidation with examples.

MEDIUM

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

Collect two paper cups- - - one empty and the other filled with water and a lighted candle. What happens when we hold the empty cup and the filled cup over the lighted candle? Give reasons.

MEDIUM

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

Differentiate between Combustion and oxidation

EASY

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

Define combustion.

MEDIUM

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

What should one do to avoid the blackening of the cooking utensils?

EASY

Science>Chemistry>Chemical Changes and Reactions>Change of Energy during Chemical Reaction

List conditions under which combustion can take place.