Question

Assertion : Inert electrolytes like $KCl, KNO_{3}$ are used in salt bridge.
Reason : Salt bridge provides an electric contact between the two solutions without allowing them to mix with each other.

• A. If both assertion and reason are true and reason is the correct explanation of assertion.
• B. If both assertion and reason are true but reason is not the correct explanation of assertion.
• C. If assertion is true but reason is false.
• D. If both assertion and reason are false.

Answer 1

Answer: (A)

Salt bridge is a tube containing electrolyte which provides contact with solution. Inert electrolytes such as $KCl \cdot KNO _{3}$ which have equal value of transport number are used as salt bridge.