Which of the following is the most correct electron displacement for a nucleophilic reaction to take place?
1. | |
2. | |
3. | |
4. |
Some meta-directing substituents in aromatic substitution are given.
Most deactivating group among the following is:
1. –SO3H
2. –COOH
3. –NO2
4. –C≡N
Among the following compounds the one that is most reactive towards electrophilic nitration is:
1. Benzoic acid
2. Nitrobenzene
3. Toluene
4. Benzene
Among cyclohexanol (I), acetic acid (II), 2, 4, 6-trinitrophenol (III) and phenol (IV) the correct order of decreasing acidic character will be:
1. | III>II>IV>I | 2. | II>III>I>IV |
3. | II>III>IV>I | 4. | III>IV>II>I |
Which one is most reactive towards SN1 reaction?
1.
2.
3.
4.
1. | 2. | ||
3. | 4. |
Following is the list of some aromatic compounds. Select the correct sequence of decreasing order of reactivity for electrophilic aromatic substitution reaction using the answer codes given below:
a.
b.
c.
d.
Answer codes :
1. a d b c
2. c d b a
3. a b d c
4. a b c d
Arrange the decreasing order of reactivity of these compounds for nucleophilic substitution reaction.
a.
b.
c.
d.
Select the correct answer from the codes given below:
Codes:
1. c, d, a, b
2. c, d, b, a
3. a, b, c, d
4. a, b, d, c
Arrange decreasing order of reactivity of given compounds with NBS/ / hv:
a.
b.
c.
d.
Select the correct answer from the codes given below:
Codes :
1. d c a b
2. d c b a
3. a b c d
4. a c b d