Chemistry · Ionic Equilibrium
JEE Main 2024 — 8 April, Shift 2 — Question 69
Given below are two statements , one is labelled as Statement I and the other is labelled as Statement II.
Statement (I) : A Buffer solution is the mixture of a salt and an acid or a base mixed in any particular quantities.
Statement (II) : Blood is naturally occurring buffer solution whose pH is maintained by concentrations.
In the light of the above statements, choose the correct answer from the options given below.
- Option A:Correct
Statement I is false but Statement II is true
- Option B:
Both Statement I and Statement II is true
- Option C:
Both Statement I and Statement II is false
- Option D:
Statement I is true but Statement II is false
Answer: A
Step-by-step solution
Statement I is False: A buffer solution is not formed by mixing a salt and an acid or a base in any proportion. A buffer consists of a weak acid and its conjugate base or a weak base and its conjugate acid present in comparable amounts, so that the pH remains nearly constant.
Statement II is True: Blood is a naturally occurring buffer solution. Its pH is maintained mainly by the carbonic acid–bicarbonate buffer system, i.e.,
Thus, the correct answer is Statement I is false but Statement II is true.
Answer key and solution verified before publishing.
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- Exam
- JEE Main 2024
- Paper
- 8 April, Shift 2
- Subject
- Chemistry
- Chapter
- Ionic Equilibrium
- Topic
- Buffer solution & pH of Special Buffers - Zwitter ions ++