Question # 1

Which statement in not correct about alcohol?

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Ethyl alcohol is heavier than water

Ethyl alcohol ecaporates more quickly

Alcohol with less number of carbon atoms is more soluble in water than alcohol with more number of carbons atoms

Alcohol produces H₂by reaction with sodium metal

Ethanol can be converted into ethanoic acid by

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Hydrogenation

Hydration

Oxidation

Fermentation

Which of the following compounds will not react with sodium metal to release hydrogen

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CH₃CH₂CH₃

CH₃CH₂OH

C₆H₅OH

C₆H₅CH₂OH

Concentration of rectified spirit is:

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12%

14%

90%

95%

In Dow's method, phenol can be made from

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Chlorobenzene

Benzene

Toluene

Benzene sulphonic acid

Which of the following statements is correct?

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Phenol is less acidic than ethyl alcohol

Phenol is more acidic than ethanol

Phenol is more acidic than carbonic acid

Phenol is more acidic than CH₃COOH

Phenol is more readily soluble in

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Dil. HCl

Both NaOH and HCl

NaOH sol

Sodium bicarbonate solution

The organic compounds which are derivative of hydrocarbons of oxygen are:

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Carbohydrates

Phenols

Alcohals

All of these

A compound of the formula C₄H₁₀O_{reacts with sodium and undergoes oxidation to give a carbonyl compound which does not reduce Tollen's reagent, the original compound is}

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Diethyl ether

n-Butyl alcohol

Isobutyl alcohol

sec-Butyl alcohol

The boiling point of glycerol is more than propanal because of

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Hybridisation

H-bonding

Resonance

All these factors

During dehydration of alcohols to alkenes by heating with conc. H₂SO₄, the initial step is

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Formation of an ester

Protonation of alcohol molecule

Formation of carbocation

Elimination of water

The strongest acid among the following aromatic compound is

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Ortho-nitrophenol

Para-chlorophenol

Para-nitrophenol

Meta-nitrophenol

Alcohol can be denaturated by adding:

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Acetone

Methanol

Pyridine

All

Alcohol fermentation is brought about by the action of

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CO₂

O₂

Invertase

Yeast

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

Isopropyl alcohol on oxidation gives

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Acetone

Ether

Ethylene

Acetaldehyde

Which is a reagent for Lucas test

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ZnCl₂+ Conc. HCl

Zn

Na

Br

Which compound is more soluble in water?

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C₂H₅OH

C₅H₅OH

CH₃OCH₃

n-Hexanol

When ethylene glycol is heated with acidified potassium permanganate, the main organic compound obtained is

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Oxalic acid

Glyoxal

Formic acid

Ethanol

which enzyme is not involved in the fermentation of starch ?

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Diastase

Zymase

Urease

Invertase

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

The boiling points of alcohols are higher than the corresponding alkanes, This is because

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Of hydrogen bonding existing between molecules of alcohols

Alkanes are dipolar compounds

Alcohols are sweet in taste

Alcohols are soluble in water

Which bond shows maximum hydrogen bonding with water?

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CH₃OH

C₂H₅OH

CH₃----O----CH₃

C₆H₅OH

Which compound is called a universal solvent?

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H₂O

CH₃OH

C₂H₅OH

CH₃----O---CH₃

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Aqueous bromine

Dilute HNO₃

Dilute HCI

CH₃COCI

The hydroxyl derivatives of aromatic hydrocarbons which have the -OH group directly bonded to the ring C-atom are called

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Alcohols

Ketones

Esters

Phenols

How many secondary alcoholic groups are present in the structure of glucose OHC CHOH CHOHCH OH CHOH CH₂OH

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1

2

3

4

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1-bromobutane

2-bromobutane

1-bromo-2-methyl propane

2-bromo-2-methyl propane

The test used for the detection of ethanol in the mouth of a drunk driver is that the drunk driver is asked to blow air from mouth into a solution of K₂Cr₂O₇and H₂SO₄. The colour changes, if the driver is drunk

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From orange to green

From pink to green

From orange to colorless

From pink to colorless

Which of the following process is employed to convert alkyl halide into alcohol?

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Addition

Substitution

Dehydrohalogenation

Molecular rearrangement

Dehydration of glycerol give

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Propane

Propene

Acrolein

Benzene

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

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