U. ар.The following change is observed on dipping a litmus paper in aqueous solution of Mgo.a. Red litmus turns blue, therefore MgO is alkaline.b. Blue litmus 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.

U. ар.The following change is observed on dipping a litmus paper i

1.	U. ар.The following change is observed on dipping a litmus paper in aqueous solution of Mgo.a. Red litmus turns blue, therefore MgO is alkaline.b. Blue litmus 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.
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