Question

vThe solution of ash obtained after burning magnesium ribbon in air will turn a. red litmus to blue because it is acidic in nature. b. blue litmus to red because it is basic in nature. c. blue litmus to red because it is acidic in nature. d. Red litmus to blue because it is basic in nature.

Answer 1

Magnesium ribbon burns in air on presence of oxygen to form magnesium oxide.
since MgO is a metallic oxide so it is basic in nature.

Answer 2

Answer : The correct option is, (d) Red litmus to blue because it is basic in nature.

Explanation :

As we know that when the magnesium ribbon burns in the air in presence of oxygen to form magnesium oxide as a product.

The balanced reaction will be,

$2Mg+O_2\rightarrow 2MgO$

Since, magnesium oxide is a metallic oxide. So, it is basic in nature.

That means the solution of ash obtained after burning magnesium ribbon in air will turn red litmus to blue because it is basic in nature.

Hence, the correct option is, (d)