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

Subtopic:  Phenols: Preparation & Properties |
 82%
From NCERT
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The number of structural isomers of alcohol of formula  C5H12O are -

1. 4 2. 6
3. 8 4. 10
Subtopic:  Alcohols: Preparation & Properties |
 53%
From NCERT
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The number of monohydric phenols that can have the molecular formula, \(\mathrm{C}_7 \mathrm{H}_8 \mathrm{O}\) are-

1. 2 2. 3
3. 4 4. 5
Subtopic:  Alcohols: Preparation & Properties |
 58%
From NCERT
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Phenol is more acidic than ethanol due to -

1. Resonance

2. Phenoxide ions 

3. Less -I effect

4. More ability to gain a proton

Subtopic:  Phenols: Preparation & Properties |
 59%
From NCERT
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The group that activates benzene ring towards electrophilic substitution reaction is-

1. OH 2. NO2
3. CN 4. COOH
Subtopic:  Electrophilic Substitution Reactions, Uses of Phenols |
 78%
From NCERT
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An adduct will be formed in which of the following reactions?
 
1. Propene → Propan-2-ol
2. Benzyl chloride → Benzyl alcohol
3. Ethyl magnesium chloride → Propan-1-ol
4. Ethanol →Ethene

Subtopic:  Phenols: Preparation & Properties |
 67%
From NCERT
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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.

Subtopic:  Mechanism of Dehydration, Methanol & Ethanol | Phenols: Preparation & Properties |
 85%
From NCERT
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The compound having the lowest boiling point is -

1. Ethanol 2. Methanol
3. Methoxymethane 4. Propanol
Subtopic:  Ethers: Preparation & Properties, Uses |
 74%
From NCERT
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 Preferred alkyl halide for synthesis of ether in Williamson synthesis is-

1) Secondary

2) Tertiary and secondary both

3) Tertiary

4) Primary

Subtopic:  Ethers: Preparation & Properties, Uses |
 83%
From NCERT
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The product formed on dehydration of propan-1-ol is -
1. 1-Propoxypropane  2. 2-Propoxypropane 
3. 1-Propoxyethane 4. 2-Ethoxypropane 

Subtopic:  Mechanism of Dehydration, Methanol & Ethanol | Ethers: Preparation & Properties, Uses |
 66%
From NCERT
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