Question # 1

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

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Benzene

Benzaldehyde

Toluene

Hexanol

Alcohols reacts with Grignard reagent to form

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Alkanes

Alkenes

Alkynes

All

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Aqueous bromine

Dilute HNO₃

Dilute HCI

CH₃COCI

Which is not the enzyme involved in the preparation of ethyl alcohol by fermentation of starch

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Diastase

Maltase

Zymase

Invertase

Dehydration of ethyl alcohol yields

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Aldehyde

Ketone

Acid

Alkene

Which of the following is weakly acidic in nature

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Alcohol

Phenol

Aidehyde

Amide

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

Alcohol can be denaturated by adding:

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Acetone

Methanol

Pyridine

All

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

Which compound is more soluble in water?

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C₂H₅OH

C₅H₅OH

CH₃OCH₃

n-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

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

Carbolic acid is the other name for

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Methanol

Ethanol

Propanol

Phenol

Primary and secondary alcohols on action of red hot copper give

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Aldehydes and ketones respectilvely

ketones and aldehydes respectively

Only aldehydes

Only ketones

Which structure shows a tertiary alcohol

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CH₃CH₂OH

(CH₃)₂CHOH

(CH₃)₃COH

CH₂OH

Which compound shows hydrogen bonding

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C₂H₆

C₂H₅CI

CH₃-O-CH₃

C₂H₅OH

Alcohols, phenols and ethers may be considered as derivative of

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Hydrocarbons

Benzene

Carboxylic acid

Water

Organic acid without a carboxylic acid group is

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Ascorbic acid

Vinegar

Oxalic acid

Picric acid

The boiling point of glycerol is more than propanal because of

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Hybridisation

H-bonding

Resonance

All these factors

Which of the following compound is obtained on passing ethanol vapours on heated Al₂O₃?

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Ethylether

Acetone

Ethane

Ethanol

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

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Addition

Substitution

Dehydrohalogenation

Molecular rearrangement

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

Diethyl ether is obtained by Williamsons synthesis using

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Ethanol + Na + C₂H₅Br

Ethanol + Mg + C₂H₅Br

Methanol + Na + CH₃Br

Methanol + Mg + CH₃Br

To prepare ethanol by fernentation the optimum temp. is

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10 - 20°C

25 - 30°C

20°C

35°C

Methanol and ethanol can be distinguished by

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Iodoform test

Iucas test

Dichromate/H₂SO₄oxidation test

Flame test

Which bond shows maximum hydrogen bonding with water?

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CH₃OH

C₂H₅OH

CH₃----O----CH₃

C₆H₅OH

Scientific study of fermentation was first made by

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Buchner

Liebig

Biot

Pasteur

Mild oxidation of glycerol with H₂O₂/FeSO₄gives

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Glyceraldehyde

Dihydroxy acetone

Glycerose

None

Ethanol can be converted into ethanoic acid by

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Hydrogenation

Hydration

Oxidation

Fermentation

95% alcohol is called

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Rectified spirit

Spirit of wine

Spirit

Methylated

Which the increase in carbon number of solubility of an alcohol

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Increases

Decreases

Remains unaffected

None of these

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