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 -

The number of monohydric phenols that can have the molecular formula, \(\mathrm{C}_7 \mathrm{H}_8 \mathrm{O}\) are-

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-

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 -

 Preferred alkyl halide for synthesis of ether in Williamson synthesis is-

1) Secondary

2) Tertiary and secondary both

3) Tertiary

4) Primary