The group that activates the benzene ring towards electrophilic substitution reaction is:
1. | OH | 2. | NO2 |
3. | CN | 4. | COOH |
1. | Propene → Propan-2-ol |
2. | Benzyl chloride → Benzyl alcohol |
3. | Ethyl magnesium chloride → Propan-1-ol |
4. | Ethanol →Ethene |
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.
The compound having the lowest boiling point is:
1. | Ethanol | 2. | Methanol |
3. | Methoxymethane | 4. | Propanol |
The preferred alkyl halide for the synthesis of ether in Williamson synthesis is:
1. | Secondary | 2. | Tertiary and secondary both |
3. | Tertiary | 4. | Primary |
1. | 1-Propoxypropane | 2. | 2-Propoxypropane |
3. | 1-Propoxyethane | 4. | 2-Ethoxypropane |
The alkoxy group in aryl alkyl ethers activates the benzene ring towards:
1. Nucleophilic addition reaction
2. Electrophilic addition reaction
3. Nucleophilic substitution reaction
4. Electrophilic substitution reaction
4-Methoxytoluene will be the major product in :
1. Friedel-Crafts reaction-alkylation of anisole
2. Nitration of anisole
3. Bromination of anisole in ethanoic acid medium
4. Friedel-Craft’s acetylation of anisole
An appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene is/are :
1. | |
2. | |
3. | |
4. |
Phenol is more acidic than ethanol due to:
1. Resonance
2. Phenoxide ions
3. Less -I effect
4. More ability to gain a proton