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NEET Chemistry Buffer Solutions MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Which of the following pairs constitutes a buffer?

A

NaOH and NaCl

B

HNO₃ and NH₄NO₃

C

HCl and KCl

D

HNO₂ and NaNO₂

Correct Answer

Option D

Detailed Explanation

A buffer solution contains a weak acid and its conjugate base or a weak base and its conjugate acid. HNO₂ and NaNO₂ form a buffer.

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