Select Question Set:
- 1(current)
Q. No.A group that deactivates the benzene ring towards electrophilic substitution but which directs the incoming group principally to the o- and p-position is.
1. -NH2
2. -Cl
3. -NO2
4. -C2H5
Subtopic: Types of Reaction |
54%
Level 3: 35%-60%
Hints
Subtopic: Types of Reaction |
65%
Level 2: 60%+
NEET - 2008
Hints
Which compound is most reactive towards electrophilic substitution reaction?
1. Phenol
2. Aniline
3. Methoxy benzene
4. Toulene
Subtopic: Types of Reaction |
Level 3: 35%-60%
Hints
The presence of a halogen on the benzene ring in a nitration reaction leads to:
| 1. | Direct nitro group to come at meta and deactivate the ring due to –I effect of halogen. |
| 2. | Direct nitro group to come at ortho and para position and deactivate the ring due to –I effect of halogen. |
| 3. | Direct nitro group to come at meta and activate the ring toward nitration reaction. |
| 4. | Nitration reaction does not take place due to deactivation caused by –I effect of halogen. |
Subtopic: Types of Reaction |
72%
Level 2: 60%+
Hints
What type of reaction is represented by the following equation?
\(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{I}+\mathrm{KOH}(\mathrm{aq}) \rightarrow \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}+\mathrm{KI} \)
1. Nucleophilic substitution reaction
2. Elimination reaction
3. Addition reaction
4. Electrophilic substitution reaction
\(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{I}+\mathrm{KOH}(\mathrm{aq}) \rightarrow \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}+\mathrm{KI} \)
1. Nucleophilic substitution reaction
2. Elimination reaction
3. Addition reaction
4. Electrophilic substitution reaction
Subtopic: Types of Reaction |
80%
Level 1: 80%+
Hints
Which of the following reactions is an elimination reaction?
| 1. | CH3CH2Br + HS- → CH3CH2SH + Br- |
| 2. | ( CH3)2C=CH2 + HCl → (CH3)2ClC-CH3 |
| 3. | CH3CH2Br+HO- → CH2=CH2 + Br-+H2O |
| 4. | (CH3)3C-CH2OH + HBr → (CH3)2CBrCH2CH3 + H2O |
Subtopic: Types of Reaction |
79%
Level 2: 60%+
Hints
Select Question Set:
- 1(current)
Q. No.
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