Give reasons for the following:

Oxygen gas does not affect moist blue litmus paper, but carbon dioxide turns it slightly pink.

Give reasons for the following:

Oxidation of sulphur results in a product which turns moist blue litmus red.

Give reasons for the following:

Combustion and respiration show similarity.

Name the following:

The product formed on oxidation of phosphorus.

Name the following:

The acid formed when the product of oxidation of phosphorus, reacts with water.

Name the chemical name of rust.

Name the pollutant which combines with water to give sulphuric acid- a product of acid rain.

Name the gas required for both combustion and rusting.

Draw a neat labelled diagram for the following experiment.

To determine the component of air used up in burning by using phosphorus and a bell jar.