Physics NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 12 PCB MCQ (Single Correct)

Given below are two statements.

Statement I: A buffer solution is a mixture of a weak acid and its salt or a weak base and its salt taken in appropriate amounts; simply mixing "a salt with an acid or base in any proportion" does not always yield a buffer.

Statement II: Human blood is a natural buffer whose pH is primarily regulated by the conjugate pair.
In the light of the above statements, choose the most appropriate answer from the options given below:

A
Statement I is correct but Statement II is incorrect.
B
Statement I is incorrect but Statement II is correct.
C
Both Statement I and Statement II are correct.
D
Both Statement I and Statement II are incorrect.

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Text Solution

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The correct answer is:
C

A buffer requires a weak acid/base with its conjugate salt in suitable ratios (not any random proportions). Blood is buffered mainly by the system.

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