Chemistry - Complete Pblock- Question with Solution | TestHub
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:
Options:
Answer:
Solution:
The moist air becomes dry in presence of silica gel because the water molecules present in air get adsorbed on the surface of the gel. Silica gel adsorbs moisture from air via adsorption, thus protects the instrument from water corrosion (rusting) and/or prevents malfunctioning.
So, both assertion and reason are true and reason is the correct explanation of assertion.