Question

What is the reason for different behaviour of Mg in test tube B?

A. Mg is lighter element than dil. HCl

B. Mg reacts with dil. HCl to produce H2 gas which helps in floating

C. Mg reacts with dil. HCl to produce N2 gas which helps in floating

D. Mg reacts with dil. HCl to produce CO2 gas which helps in floating​

Answer 1

Answer:

B)

Explanation:

b is the right option

Mg+HCl gives MgCl2+H2

Answer 2

The correct answer is Option (b)

Mg reacts with dil. HCl to produce H2 gas which helps in floating.

Explanation:

• When magnesium reacts with hydrochloric acid, it forms magnesium chloride with the liberation of hydrogen gas.
• A slight change in the temperature takes place and
• A slight fuzzing of gas bubbles is evolved.
• Magnesium ribbon will dissolve into the water leaving it blue and floating.
• Following reaction takes place  Mg +HCl →MgCl +H₂
• Answer is Option (b) is Mg reacts with dil. HCl to produce H2 gas which helps in floating