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. |
Identify Z in the following reaction:
\(CH_3CH_2CH=CH_2 \xrightarrow[H_2O,\ H_2O_2,\ OH^-]{B_2H_6} Z \)
1. | \(CH_3CH_2CH_2CH_2OH\) | 2. | \(CH_3CH_2 \ C \ HCH_3 \\~~~~~~~~~~~~~~~~~~| \\~~~~~~~~~~~~~~~~OH\) |
3. | \(CH_3CH_2CH_2CHO \) | 4. | \(CH_3CH_2CH_2CH_3 \) |
The IUPAC name of the product that formed in the following chemical reaction is:
\(\text{Acetone}\xrightarrow[\bf\text{(ii) H}_2\text{O, H}^+]{\bf\text{(i) C}_2\text H_5\text{MgBr, dry Ether}}\text{Product } \)
1. | Pentan-3-ol | 2. | 2-Methyl butan-2-ol |
3. | 2-Methyl propan-2-ol | 4. | Pentan-2-ol |
1. | sec-Butyl alcohol | 2. | tert-Butyl alcohol |
3. | iso-Butyl alcohol | 4. | iso-Propyl alcohol |
Anisole on reaction with HI gives:
1. | 2. | ||
3. | 4. |
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. |
Statement I. | \(HCl + ZnCl_2\), known as Lucas Reagent. | In Lucas test, primary, secondary, and tertiary alcohols are distinguished on the basis of their reactivity with conc.
Statement II. | Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent. |
1. | I is incorrect but II is correct |
2. | Both I and II correct |
3. | Both I and II are incorrect |
4. | I is correct but II is incorrect |
I: | The product of the reaction of phenol with bromine depends on the nature of the solvent. |
II: | The reaction of phenol with bromine in CHCl3 gives a monosubstituted bromo derivative whereas the reaction of phenol with bromine water yields a trisubstituted bromo derivative of phenol. |
In light of the above statements, choose the most appropriate answer from the options given below:
1. | I is correct and II is incorrect |
2. | I is incorrect and II is correct |
3. | Both I and II are correct |
4. | Both I and II are incorrect |
The increasing order of reactivity of the following compounds towards acid-catalyzed dehydration is:
1. | 2. | ||
3. | 4. |
1. | (II) < (III) < (I) < (IV) | 2. | (II) < (I) < (III) < (IV) |
3. | (I) < (III) < (IV) < (II) | 4. | (III) < (I) < (II) < (IV) |