Question

The following question consist of two statements, one labelled as Assertion A and the other to the

instructions given below:

(i) if both A and R are correct and R is the correct reason of A

(ii) if both A and R are correct but R is not the correct reason of A

(iii) A is correct R is wrong

(iv) A is wrong R is correct

(v) both A and R are wrong.

Assertion A: Liquids tend to have maximum number of molecules at their surface. 1

Reason R: Small liquid drops have spherical shape.

Assertion A: Cooling is caused on abrupt expansion of idea gas 1

Reason R: Compressibility factor of ideal gas is zero.

Assertion A: The equation PV = nRT does not apply to real gases 1

Reason R: a, and b, the vander Waal constants should be zero for ideal gases

Assertion A: The value of a is higher for NH3 in comparison to that for N2 1

Reason R: H-bonding occurs in ammonia

Assertion A: Ethanol is more viscous than glycerol. 1

Reason R: Interparticle forces in ethanol as well glycerol are covalent bonds.
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Answer 1

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Explanation:

a is right answer