Q. No.
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. | \(CH_3CH_2CH_2CH_3 \) |
An appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene is/are :
| 1. |  |
| 2. |  |
| 3. | \(\mathrm{CH_3-CH_2-CH_2-O-CH_3+HBr}\) |
| 4. | \(\mathrm{(CH_3)_3C-OC_2H_5+HI}\) |
Potassium permanganate reagent is used for :
1. Oxidation of primary alcohol to carboxylic acid.
2. Oxidation of primary alcohol to aldehyde.
3. Bromination of phenol to 2,4,6-tribromophenol.
4. Dehydration of propan-2-ol to propene.
Propanol has a higher boiling point than that of butane because:
1. Butane undergoes intermolecular ionic bonding
2. Propanol undergoes intermolecular H-bonding
3. Propanol undergoes intramolecular hydrogen bonding
4. Butane undergoes intermolecular H-bonding
Preparation of ethers by 2 or 3-degree alcohols in an acidic medium is not a suitable method because:
| 1. | In case of secondary or tertiary alcohols, ketone is obtained as a product. |
| 2. | In case of secondary or tertiary alcohols, aldehyde is obtained as a product. |
| 3. | In case of secondary or tertiary alcohols, alkene is obtained as a product. |
| 4. | In case of primary alcohols, alkene is obtained as a product. |
Select the correct option based on statements below:
| Assertion (A): | p-Nitrophenol is more acidic than phenol. |
| Reason (R): | Nitro group helps in the stabilization of the phenoxide ion by dispersal of negative charge due to resonance. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Match the reactions from Column-I with their corresponding descriptions from Column-II and select the correct option.
|
Column-l (Name of Reaction) |
Column-ll (Description of Reaction) |
||
| A. |
Reimer-Tiemann reaction |
I. |
Conversion of phenol to o-hydroxysalicylic aid |
| B. |
Kolbe's reaction |
II. |
Heated copper at 573K |
| C. |
Conversion of 2alcohol to a ketone |
III. |
Reaction of an alkyl halide |
| D. |
Williamson's synthesis |
Iv. |
Conversion of phenol to salicylaldehyde |
Codes:
| A | B | C | D | |
| 1. | II | III | IV | I |
| 2. | III | IV | I | II |
| 3. | I | IV | III | II |
| 4. | IV | I | II | III |
Match the starting material in Column I with the products formed (Column II) in the reaction with HI.
| Column I |
Column II |
||
| A. |  |
1. |  |
| B. |  |
2. |  |
| C. |  |
3. |  |
| D. |  |
4. |  |
| 5. |  |
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 1 | 5 | 2 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 5 | 2 | 1 |
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