Std 7 Science Paper Solution || dhoran 7 vigyan paper solution

In the preparation of ultra filter paper collodion solution is used collodion is

Blue litmus paper turns on contact with an acidic solution.

Probability | JEE Mains 2018 Online Paper Solution | All Shift

When the strip of pH paper was put in a given solution the pH paper changes to orange red. The given solution is most likely to be of:

Assertion (A): Ammonia solution is an alkali. Reason (R ): Ammonia solution turns blue litmus paper red.