Upon dehydration, the below mentioned compound will not give:
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. | \(CH_3CH_2CH_2CH_3 \) |
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 items of Column I with items of Column II.
Column l |
Column ll |
||
A. |
Reimer-Tiemann reaction |
1. |
Conversion of phenol to o-hydroxysalicylic aid |
B. |
Kolbe's reaction |
2. |
Heated copper at 573K |
C. |
Conversion of 2alcohol to a ketone |
3. |
Reaction of an alkyl halide |
D. |
Williamson's synthesis |
4. |
Conversion of phenol to salicylaldehyde |
Codes:
A | B | C | D | |
1. | 2 | 3 | 4 | 1 |
2. | 3 | 4 | 1 | 2 |
3. | 1 | 4 | 3 | 2 |
4. | 4 | 1 | 2 | 3 |
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 |