Give the majore and minor products of the following reactions.
`a.`
`b.`

Explanation

`a.` If `RX` is `RF`, the less `-` substituted alkene `(`Hofmann elimination `)` is formed, irrespective of whether the base is bulky or non `-` bulky. Both `(A)` and `(B)` are same.

`b.` `(A)` `(` More `-` substituted alkene, Saytzeff elimination, base is non `-` bulky `)`
`(B)` `(` Less `-` substituted alkene, Hofmann elimination, base is bulky `)`
`c.` `(A)` `(` More `-` substitued alkene, Saytzeff elimintion, base is non `-` bulky `)`
`(B)` `(` Less `-` substituted, base is bulky, Hofmann product `)`
d.

e. Bulky group `(` isopropyl group `)` should be in equatorial position for stable conformer of cyclohexane `(a implies ` axial and `eimplies ` equatorial).

Here, group is below the plane, so `(-CI)` group should be below the plane for `cis-` configuration. So `(CI)` group is in axial position.
`CI` and (Major) `(78%)` Trisubstituted (Minor `)(22%)` Disubstituted
`f.` Bulky group, for stability, must be in equatorial position `(` down the plane `)` and `CI` group should also be at equatorial position (up the plane) for trans-configuration.