A basic solution turns blue litmus red.

Phenols turn blue litmus red

Sulphuric acid turns blue litmus red.

Dry hydrogen chloride gas does not turn blue litmus red whereas hydrochloric acid does. Give one reason.

A substance X, which is an oxide of a group 2 element, is used intensively in the cement industry. This element is presented in bones also. On treatment with water it forms a solution which turns red litmus blue. Identify X and also write the chemical reactions involved.

A solution turns red litmus blue its ph is:

A solution turns red litmus blue, its pH is likely to be

A solution turns red litmus blue, its pH is likely to be :