
Identify the type of the following reaction:
The reaction mixture becomes warm.

Important Questions on Chemical Reactions and Equations
Identify the type of the following reaction:
An insoluble substance is formed.

Identify the type of the following reaction:
The external surface of the container in which the reaction takes place becomes freezing cold.

Give one example of the reaction involving the combination of an element with another element.

Give one example of the reaction involving the combination of an element with a compound.

Give one example of the reaction involving the combination of a compound with another compound.

An aqueous solution of metal nitrate 'P' reacts with sodium bromide solution to form a yellow precipitate of compound 'Q' which is used in photography. 'Q' on exposure to sunlight undergoes decomposition reaction to form metal present in along with a reddish-brown gas. Identify P and Q. Write the balanced chemical equation for the chemical reaction. List two categories in which this reaction can be placed.

What are displacement reactions? Give one example of the following:
Reactive metal displaces less reactive metal from its salt solution.

Give one example for the following:
Reactive metal displaces hydrogen from dilute acids.
