Question

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : In expensive scientific instruments, silica gel is kept in watch-glasses or in semipermeable membrane bags.
Reason (R) : Silica gel adsorbs moisture from air via adsorption, thus protects the instrument from water corrosion (rusting) and / or prevents malfunctioning.
In the light of the above statements, choose the correct answer from the options given below :

• A. Both (A) and (R) are true and (R) is the correct explanation of (A)
• B. Both $(A)$ and $(R)$ are true but $(R)$ is not the correct explanation of $(A)$
• C. (A) is false but (R) is tirle
• D. (A) is true but (R) is false

Answer 1

Answer: (A)

Silica gel prevents water corrosion (rusting) and instrument malfunction by adsorbing moisture from the air