Question

.When magnesium is burnt in air; a powdery Ash X is formed .X on dissolving in water forms Y.
A. What are X and Y? (3)
B.What is galvanization?

Answer 1

Answer:

Answer. i) The X is magnesium oxide and the Y is magnesium hydroxide. Now,when the magnesium oxide reacts with water,it forms magnesium hydroxide. ii) The Y or magnesium hydroxide turns the red litmus paper into blue litmus paper.