Question

ye fill in the blanks hai magnesium oxide when dissolved in water will give yaha par khali sthan hai colour with litmus solution

Answer 1

Magnesium is a metal and metal oxides are basic in nature....so magnesium oxide when dissolved in water will give BLUE colour with litmus solution...

Answer 2

Magnesium hydroxide i.e Mg(OH)2 and Hydrogen gas will be formed
Reaction------
Mg + H2O = Mg(OH)2 +H2
So litmus paper will become blue because magnesium hydroxide is a strong base.