Question

Ans. the above mcq correctly ignore my answers...if possible provide explanation too but not necessary jst ans. it correctly..​

Answer 1

Answer:

72. (2) sn1 checking stability of carbocation

iii option.. resonance involve so +ve charge more stable

i and ii option.. 2° carbon cation produced ,have more hyperconjugation and +I effect than 1° carbon

73.(1) fluorine have lesser size than others and have more electrons

74. (4)sn2 checking stability of nagetive charge

iii option- resonance involve

I option - most suitable condition for sn2(1° carbon and only one carbon compound)

iii option - somewhat resonance involve ,but blocked by cross resonance with benzene ring .

iv option- 2 carbon chain +I effect ( not needed for -ve charge)

75. (1)

William ether synthesis only possible for3°attacking group when leaving group present on 1° carbon(option 1 and 2) and more stable carbocation (only option1)

76. (1). May be(4)

if cl2 taken in excess then continuous reaction leads replacement of every hydrogen by chlorine

Answer 2

72 - 2

73 - 3

74 - 2

75 - 2

76 - 1

This answers r also % correct.

Hope it helped...

sry to say but The above person to give answer has given it wrong bea. even I m an Allen student and we all get the same paper and same exam dates as u know.