Question

Assertion(A): $Be(OH{)}_2$ dissolves in excess of NaOH.
Reason(R): $Be(OH{)}_2$ is an amphoteric compound.

Read the above assertion and reason and choose the correct statement regarding it.

• A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
• B. Both Assertion and Reason are true but Reason is not a correct explanation of Assertion
• C. Assertion is true but Reason is false
• D. Both Assertion and Reason are false

Answer 1

Answer: (B)

Both Assertion and Reason are true but Reason is not a correct explanation of Assertion

Beryllium hydroxide reacts with excess NaOH to form sodium beryllate, which is water-soluble.

$Be(OH{)}_2+2NaOH\to N{a}_{2}Be{O}_2+2H_{2}O$

Beryllium hydroxide dissolves with acids as well as alkalies, so it is amphoteric in nature.

Hence, option ( B ) is correct.