Verified Solution • 2025–26 Session
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QJEEM20Ch913d: JEE Main 2020 Chemistry - Class 12 JEEM20Ch913d Solution: For the following reactions K s and K e , are respectively, the …
For the following reactions

Ks and Ke, are respectively, the rate constants for substitution and elimination and the correct options is

Ks and Ke, are respectively, the rate constants for substitution and elimination and the correct options is
Multiple Choice Options
- A and Ke(A) > Ke(B)
- B and Ke(B) > Ke(A)
- C and Ke(B) > Ke(A)
- D and Ke(A) > Ke(B)
Step-by-Step Verified Solution
For 1o alkayl halide rate of substitute reaction is more than rate of elimination reaction.
When Z = A, then ks > ke and
when Z = B, then ks < ke
A > B
As B is strong base than A so for B more elimination reaction happens.
Ke(B) > Ke(A)
When Z = A, then ks > ke and
when Z = B, then ks < ke
A > B
As B is strong base than A so for B more elimination reaction happens.
Ke(B) > Ke(A)