Question

What change is observed on dipping a litmus paper in aqueous solution of MgO

Answer 1

it turns red to blue .so it is basic

Answer 2

The following change is observed on dipping a litmus paper in aqueous solution of Mgo.

a. Red litmus paper turns blue, therefore MgO is alkaline.

b. Blue litmus paper turns red, therefore MgO is acidic.

c. No colour change in litmus paper, therefore MgO is neutral.

d. Litmus paper is decolourised, therefore MgO acts as bleaching agent.