Consider the following compounds:

Hyperconjugation occurs in [2015]
III only
I and III
I only
II only
(1)
Hyperconjugation can occur only in compound III as it has -hydrogen atom.
In which of the following compounds, the bond ionisation shall give most stable carbonium ion? [2015]




(4)
is most stable due to hyperconjugation.
The incorrect statement regarding chirality is: [2022]
A racemic mixture shows zero optical rotation.
SN1 reaction yields 1 : 1 mixture of both enantiomers.
The product obtained by SN2 reaction of haloalkane having chirality at the reactive site shows inversion of configuration.
Enantiomers are superimposable mirror images on each other
(4)