1
JEE Main 2019 (Online) 12th April Evening Slot
+4
-1
An 'Assertion' and a 'Reason' are given below. Choose the correct answer from the following options :
Assertion (A) : Vinyl halides do not undergo nucleophilic substitution easily.
Reason (R) : Even though the intermediate carbocation is stabilized by loosely held p-electrons, the cleavage is difficult because of strong bonding.
A
Both (A) and (R) are correct statements but (R) is not the correct explanation of (A)
B
Both (A) and (R) are correct statements and (R) is the correct explanation of (A)
C
(A) is correct statement but (R) is a wrong statement
D
Both (A) and (R) are wrong statements.
2
JEE Main 2019 (Online) 10th April Evening Slot
+4
-1
The major product 'Y' in the following reactions is :
A
B
C
D
3
JEE Main 2019 (Online) 10th April Morning Slot
+4
-1
The major product of the following reaction is :
A
B
C
D
CH3CH = CH–CH2NH2
4
JEE Main 2019 (Online) 9th April Morning Slot
+4
-1
The major product of the following reaction is :
$${\rm{C}}{{\rm{H}}_3}{\rm{CH = CHC}}{{\rm{O}}_2}{\rm{CH_3 }}\buildrel {LiAl{H_4}} \over \longrightarrow$$
A
CH3CH2CH2CHO
B
CH3CH2CH2CO2CH3
C
CH3CH = CHCH2OH
D
CH3CH2CH2CH2OH
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