The reagent used for the bromination of phenol to 2,4,6-tribromophenol is/are:
1. Bromine water
2. Br2, CS2
3. Br2, CCl4
4. AgBr
The number of structural isomers of alcohol of formula C5H12O are -
1. | 4 | 2. | 6 |
3. | 8 | 4. | 10 |
The number of monohydric phenols that can have the molecular formula, C7H8O are-
1. 2
2. 3
3. 4
4. 5
Phenol is more acidic than ethanol due to -
1. Resonance
2. Phenoxide ions
3. Less -I effect
4. More ability to gain a proton
The group that activates 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
Preferred alkyl halide for synthesis of ether in Williamson synthesis is-
1) Secondary
2) Tertiary and secondary both
3) Tertiary
4) Primary
The product formed on dehydration of propan-1-ol is -
1. 1-Propoxypropane
2. 2-Propoxypropane
3. 1-Propoxyethane
4. 2-Ethoxypropane