Question # 1

Which compound contains - OH in their molecule

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Alcohol

Phenol

Alcohol and phenol

Ether

Which one is used as a fuel for internal combustion engines in many European countries and Brazil

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C₂H₅OH

CH₃OH

CH₃COOH

C₂H₂

Diethyl ether is obtained by Williamsons synthesis using

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Ethanol + Na + C₂H₅Br

Ethanol + Mg + C₂H₅Br

Methanol + Na + CH₃Br

Methanol + Mg + CH₃Br

Either, an organic compound has close resemblance in structure and thus a derivative of:

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Water

Oxides of lithium

Oxides of magnisium

Oxides of aluminium

Ethanol containing some methanol is called

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Absolute spirit

Rectified spirit

Power alcohol

Methylated spirit

Methanol and ethanol can be distinguished by

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Iodoform test

Iucas test

Dichromate/H₂SO₄oxidation test

Flame test

Picric acid is

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2, 4, 6-Trinitrotoluene

2, 4, 6-Tribomoethanol

2, 4,6-Trinitrophenol

Para-Nitrophenol

Which of the following is weakly acidic in nature

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Alcohol

Phenol

Aidehyde

Amide

Baukelite is a polymer obtained from two monomers

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Phenol and ethanol

Phenol and methanol

Phenol and methanal

Phenol and acetone

In Lucas test teriary alcohol make an oily layer

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Immediately

In 10 mins

On heating

Not

Methyl alcohol is not used

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As a solvent

A an anti-freezing agent

As a substitute for petrol

For denaturing of ethyl alcohol

Which of the following groups will increase the acidity of phenol?

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-NO₂

-CN

-X (halogens)

All

Which of the following cannot be produced by acidic dehydration of alcohols?

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Ethers

Aldehyde

Alkyl Hydrogen sulphate

Alkene

When phenol is distilled with zinc dust. It is reduced to

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Benzene

Benzaldehyde

Toluene

Hexanol

An organic compound will decolorise dill acidified (aq) KMnO₄on warming, but will not decolorise bromine water. What is the compound

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KMnO₄

Ethanol

Ethane

CH₃CH₂Cl

Na reacts with phenol to produce

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H₂gas

Benzene

CO₂gas

CO gas

According to Lewis concept ethers behave as:

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Acid

Base

Acid as well as a base

None of them

On heating glycerol with conc. Sulphuric acid a compound with unpleasant odour is obtained. The compound is

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Methyl alcohol

Formic acid

Prop-2-enal

Glycerol sulphate

Which compound does not show hydrogen bonding with water

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CH₃OH

C₂H₅OH

CH₃- O - CH₃

C₆H₅OH

In Dow's method, phenol can be made from

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Chlorobenzene

Benzene

Toluene

Benzene sulphonic acid

Which compound is more soluble in water?

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C₂H₅OH

C₅H₅OH

CH₃OCH₃

n-Hexanol

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Aqueous bromine

Dilute HNO₃

Dilute HCI

CH₃COCI

Rectified spirit contains alcohol about:

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80%

85%

90%

95%

The boiling point of glycerol is more than propanal because of

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Hybridisation

H-bonding

Resonance

All these factors

Which compound is more soluble in water

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C₂H₅OH

C₆H₅OH

CH₃OCH₃

n-hexanol

Oxidation of ter-alcohol gives:

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Aldehyde

Formaldehyde

Ketone

Alkens

Methanol is prepared from CO and H_{2 using catalyst:}

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ZnO

Cr₂O₃

Pt

Ni

Alcohol fermentation is brought about by the action of

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CO₂

O₂

Invertase

Yeast

The order of reactivity of halogen acids for reaction with C₂H₅OH is

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HCl > HBr > HI

HI > HBr > HCl

HBr > HI > HCl

HBr > HCl > HI

Phenol is a weak acid. The correct order of acid strength of carboxylic acid, phenol and alcohol is

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Carboxylic acid > phenol > alcohol

Carboxylic acid > alcohol > phenol

Phenol > carboxylic acid > alcohol

Alcohol > phenol > carboxylic acid

Which alcohol gives only one oxidation product when wormed with dil acidified K₂Cr₂O₇

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Butan-1-ol

Butan-2-ol

2-methyl propan-1-ol

2-methyl propan-2-ol

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ECAT Chemistry Chapter 22 Alcohols, Phenols and Ethers Online Test MCQs With Answers

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