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)

Both (A) and (R) are true and (R) is the correct explanation of (A)

Answer 2

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