+R Effect
Trending Questions
Q. Which of the following group will show +R effect?
- −CHO
- −NH2
- −NO2
- −COCH3
Q. The least stable resonating structure of phenol is :
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1027438/original_WhatsApp_Image_2021-02-16_at_11.58.52_AM.jpeg)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1027438/original_WhatsApp_Image_2021-02-16_at_11.58.52_AM.jpeg)
- (III)
- (I)
- (IV)
- (II)
Q. Which of the following group(s) show +M effect?
- −−CH2
- −NHCOR
- −O−
- −OH
Q. How many resonating structures are possible for chlorobenzene?
- 6
- 5
- 3
- 4
Q. Which of the following group(s) show +M effect?
- −−CH2
- −NHCOR
- −O−
- −OH
Q. The total number of resonating structure of phenoxide ion :
- 5
- 6
- 4
- 3
Q. The least stable resonating structure of phenol is :
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1027438/original_WhatsApp_Image_2021-02-16_at_11.58.52_AM.jpeg)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1027438/original_WhatsApp_Image_2021-02-16_at_11.58.52_AM.jpeg)
- (III)
- (I)
- (IV)
- (II)
Q. The correct order of +M effect of ′N′ containing functional group on benzene ring, amongst the given compounds is
(I)
(II)
(III)
(IV)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/954840/original_125_4.png)
(I)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/954836/original_125_1.png)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/954839/original_125_3.png)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/954840/original_125_4.png)
- I>II>IV>III
- II>I>III>IV
- I>II>III>IV
- IV>III>II>I
Q. Which of the following group(s) shows +M effect ?
- −NH2
- −OR
- −COR
- −COOH
Q.
The movement of electrons in which one of the structure is not shown correctly?
Q. Which of the following group will show +R effect?
- −CHO
- −NH2
- −NO2
- −COCH3
Q. Arrange the following compounds in increasing reactivity with CH3ONa.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1046014/original_1.2.png)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1046014/original_1.2.png)
- I<II<III
- III<II<I
- II<III<I
- I<III<II
Q. The correct order of +M effect of ′N′ containing functional group on benzene ring, amongst the given compounds is
(I)
(II)
(III)
(IV)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/954840/original_125_4.png)
(I)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/954836/original_125_1.png)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/954839/original_125_3.png)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/954840/original_125_4.png)
- I>II>IV>III
- II>I>III>IV
- I>II>III>IV
- IV>III>II>I
Q. Arrange the following compounds in increasing reactivity with CH3ONa.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1046014/original_1.2.png)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1046014/original_1.2.png)
- I<II<III
- III<II<I
- II<III<I
- I<III<II