Assertion: Among the isomeric alkanes, the branched chain isomers have lower boiling point than the straight chain isomers.

(c) : According to Raoult’s law equimolal solutions of all the substances in the same solvent will show equal elevation in boiling points as well as equal depression in freezing...

This is because hydrogen bonding is multidimensional in water whereas in HF it is linear.

(a) Due to smaller size and high poalrising power of Li+ ion ,LiCl is more covalent than KCl.  (b) Small cation Li+ ion highly polarizes large anion I-, LiI is more...

 n-butanol and 2-methyl propan-2-ol.Butanol has the higher boiling point as the branching increases the surface area of the molecule decreases so the boiling point decreases.

With branching the shape of the molecule tends to approach that of a sphere . As a result, the surface area of the branched isomers decreases, so the vander waals...

Due to lower surface area, therefore strong vander waal’s forces of attraction.

(B) If both assertion and reason are true, but reason is not the true explanation of the assertion.

(c) If assertion is true, but reason is false.

(b) If both assertion and reason are true, but reason is not the true explanation of the assertion.

(a) If both assertion and reason are true, and reason is the true explanation of the assertion.