Question

9. Which among the given statements is incorrect for magnesium metal?
(A) It burns in oxygen with a dazzling white flame.
(B) It reacts with cold water to form magnesium oxide and evolves hydrogen gas.
(C) It reacts with hot water to form magnesium hydroxide and evolves hydrogen gas.
(D) It reacts with steam to form magnesium hydroxide and evolves hydrogen gas.

Answer 1

Answer:

The answer is 'B'

Explanation:

Magnesium will react with hot water to produce magnesium hydroxide and hydrogen. Of it van react with hot water, then it can also react with steam to do the same. But it do with cold water.

•°• Answer is B

Answer 2

Answer:

(B) It reacts with cold water to form magnesium oxide and evolves hydrogen gas

Explanation:

This is because Mg is not reactive enough to react quickly with cold water