+R Effect
Trending Questions
Q.
The movement of electrons in which one of the structure is not shown correctly?
Q.
The most stable enolic form of 2, 4-pentanedione
Q.
The basicity of aniline is less than cyclohexylamine. This is due to:
-R effect of amine group
-I effect of amine group
+R effect of amine group
Hyperconjugation effect
Q. Which of the following group will show +R effect?
- −CHO
- −NO2
- −NH2
- −COCH3
Q. Arrange stability of the given carbocations in decreasing order


- i > ii > iii > iv
- iii > i > ii > iv
- ii > iii > i > iv
- iii > ii > i > iv
Q. The least stable resonating structure of phenol is :


- (III)
- (IV)
- (II)
- (I)
Q. How many resonating structures are possible for chlorobenzene?
- 6
- 5
- 3
- 4
Q. Which effect will be shown by the functional group present in the given molecule?


- +M or +R
- −M or −R
- +I
- Both (a) and (c)
Q. The total number of resonating structure of phenoxide ion :
- 5
- 6
- 3
- 4
Q. Which of the following group(s) show +M effect?
- −−CH2
- −NHCOR
- −O−
- −OH