Silica gel is a desiccant. (T/F)

Sea gel is

Silica gel is a hygroscopic substance.

Assertion : Silica gel is used to dry air. Reason : Silica gel absorbs moisture from air.

A piece of silica gel is placed in the water vapours. Will the gel adsorb or absorb water vapours?

Explain why : Fused CaCl_2 or conc. H_2SO_4 is used in a desiccator.

Silica gel is commonly used as :

Give reason: Silica gel is used in closed boxes or medicine bottles.

The volume of nitrogen gas Vm (at STP) reqired to cover a sample of silica gel with a monomolecular layer is 129cm^(3)g^(-1) of gel. Calculate the surface area per gram of the gel if each nitrogen molecule occupies 16.23xx10^(-20)m^(2) .

(a). Give an example of laboratory desiccant. (b). What are the products formed when MgCl_(2).6H_(2)O is heated?

In which of the following does adsorption take place and why? (i) Silica gel placed in the atmosphere saturated with water (ii) Anhyd. CaCl_(2) place in the atmosphere saturated with water.