Question

Given below are two statements:
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 $H_2CO_3/HCO_3^-$ concentrations.
In the light of the above statements, choose the correct answer from the options given below.

• A. Statement I is false but Statement II is true
• B. Both Statement I and Statement II is true
• C. Both Statement I and Statement II is false
• D. Statement I is true but Statement II is false

Answer 1

Answer: (A)

Statement I is false but Statement II is true

Answer 2

Statement I: False. A buffer solution is a mixture of a weak acid and its conjugate base (or a weak base and its conjugate acid) in specific ratios. The statement's claim of "any particular quantities" is incorrect.
Statement II: True. Blood is a naturally occurring buffer system, primarily maintained by the H$_2$CO$_3$/HCO$_3^-$ system, which helps regulate pH within a narrow range.
Thus, only Statement II is correct.