Aromatic Directive Influence

Q. Which of the following compounds undergoes nuclephilic substitution reaction most easily?

Q. Electrophilic substitution reaction in phenol take place at :

1. p-position
2. m-position
3. o-position
4. o- and p-position

Q. how to identify free radical addition and free radical substitution reactio

Q. Number of tertiary H atoms present in (CH3)3CCH(CH3)C(CH3)2CH(CH3)2.

Q. The rate of $S_{N}2$ reaction is maximum when the solvent is

1. $C{H}_{3}OH$
2. $H_{2}O$
3. DMSO
4. Benzene

Q. In electrophilic substitution reaction of chlorobenzene, the ortho/para- directing ability of chlorine is due to its

1. Positive inductive effect (+I)
2. Negative inductive effect (-I)
3. Positive resonance effect (+R)
4. Negative resonance effect (-R)

Q. Which of the following is most reactive towards electrophilic substitution reaction?

1. Phenol
2. Toluene
3. Nitrobenzene
4. Benzene

Q. PL explain why?

5. The decreasing order of basic strength in
C₆H₅NH₂, (C₆H₅)₂NH, CH₃NH₂, NH₃ is

(a) IV>II>II>I (b) II>II>III>IV
(c) III>IV>I>II (d) II>I>III>IV

Q. Arrange the following set of compounds in order of their decreasing relative reactivity with an electrophile, $E^{+}$.

Q.

In the following question two Statement-I (Assertion) and Statement-2 (Reason) are provided. each question has 4 choices (a), (b), (c) and (d) for its answer, out of which Only One is correct. Mark your responses from the following options:
Statement-1: Aniline becomes more reactive towards electrophilic aromatic substitution in presence of strongly acidic solution.
Statement-2: The amino group is completely protonated in strongly acidic medium. Thus the lone pair of electrons on the nitrogen is no longer available for resonance.

1. Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.
   

2. Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.
   

3. Statement-1 is true but Statement-2 is false.
   

4. Statement-1 is false but Statement-2 is true.
   

Q. Arrange the given set of compounds in order of their decreasing relative reactivity with an electrophile, $E^{+}$.

Q. In the compound $C_6{H}_{5}Z$ which of the following has all predominantly ortho and para directing groups?

1. $Z=-N{O}_2,-Cl,-OH$
2. $Z=-OMe,-CN,-N{H}_2$
3. $Z=-NHCOC{H}_3,-Cl,-COOH$
4. $Z=-NHCOC{H}_3,-C{H}_3,-Br$