1.

Which of the following pairs would have higher boiling points ?

Answer»

Solution :(a) (II) because carbonyl GROUP is more polar than DOUBLE bond.
(b) (I) acid forms dimar due to `H-`bonding.
( C) (II) cis-compound has high dipole moment `(mu)`, so more polar than trans-compound `(mu = 0)`
(d) (I) it forms `H-`bonding1 through `H` atom in `(-NH)` group.
( e) (II) it forms `H-`bonding
(f) (II) alcohols form `H`-bonding.
(G) (II) two `(OH)` groups can form more `H-`bonding with each other.
(h) (I) alcohold form `H-`bonding
(i) (II) because of high MOLECULAR mass and large size, have larger van der Waals forces of attraction.


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