I: | The acidic strength of monosubstituted nitrophenol is higher than phenol because of electron withdrawing nitro group. |
II: | o-Nitrophenol, m-nitrophenol and p-nitrophenol will have same acidic strength as they have one nitro group attached to the phenolic ring. |
1. | I is incorrect but II is correct. |
2. | Both I and II are correct. |
3. | Both I and II are incorrect. |
4. | I is correct but II is incorrect. |
Match the reagents (List-I) with the products (List-II) obtained from phenol:
List-I | List-II | ||
(A) | (i) NaOH (ii) CO2 (iii) H+ |
(I) | Benzoquinone |
(B) | (i) Aqueous NaOH + CHCl3 (ii) H+ |
(II) | Benzene |
(C) | \(\Delta\) | Zn dust,(III) | Salicylaldehyde |
(D) | Na2Cr2O7, H2SO4 | (IV) | Salicylic acid |
(A) | (B) | (C) | (D) | |
1. | (III) | (IV) | (I) | (II) |
2. | (II) | (I) | (IV) | (III) |
3. | (IV) | (III) | (II) | (I) |
4. | (IV) | (II) | (I) | (III) |
1. | Aniline, NaNO2 + HCl, H2O, heating |
2. | Cumene, O2, H3O+ |
3. | |
4. |
The most reactive compound among the following for electrophilic aromatic substitution is:
1. | 2. | ||
3. | 4. |
The most acidic compound among the following is:
1. | 2. | ||
3. | 4. |
The structure of intermediate A in the following reaction is:
1. | 2. | ||
3. | 4. |
The most acidic compound among the following is:
1. | 2. | ||
3. | 4. |
The reaction of phenol with chloroform in the presence of dilute sodium hydroxide finally introduces a functional group X. The X is:
1. -CH2Cl
2. -COOH
3. -CHCl2
4. -CHO
The most acidic compound among the following is:
1. | 2. | ||
3. | 4. |
Among the following four compounds
a. | Phenol | b. | methyl phenol |
c. | meta-nitrophenol | d. | para-nitrophenol |
The acidity order is:
1. c > d > a > b
2. a > d > c > b
3. b > a > c > d
4. d > c > a > b