NEET Chemistry Buffer Solutions MCQ Question
Which of the following pairs constitutes a buffer?
NaOH and NaCl
HNO₃ and NH₄NO₃
HCl and KCl
HNO₂ and NaNO₂
Correct Answer
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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