JEE Advanced Model Paper 16 with solutions for online practice

“a” gives substitution ; because molecule dominantly exists in diequatoria conformation; in which is no availability of suitable hydrogen for elimination
“b” gives elimination; because diaxial existace of -

+

N

Me3 β - Hydrogen encourageselimination
c,d,e,f,g → conceptual
b)

−

‌

CN → strong nucleophile [ than a base ]; with 2° halides dominantly gives SN2 substitution