Q 14 B option
Q 4 b option
Ques 4 b you are correct please give solution
And ques 14 c is given answer
For Q 4 my approach was stronger the base , stronger is the nucleophile.
For Q 14 possible explanation can be that due to partial double character halides become weak leaving group.
Q14)Due vacant d orbital in halides so they undergo resonance with double bond that’s why they double character.