Question # 1

When wine is put in air, it becomes sour due to

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Oxidation of C2H5OH

Formation of C2H5NH2

Reduction of C2H5OH

Dissolution of CO2

Which one of the following is more acidic

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Phenol

Carboxylic acid

Alcohols

Amines

Which of the following ketone will not give iodoform test

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Methyl isopropyl ketone

Dimethyl ketone

Ethyl isopropyl ketone

2-hexanone

Temperature required for the dehydration of ethanol into ethene in the presence of HaSOu is

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130°C

170°C

175°C

180°C

The synthesis of ethene from ethyl alcohol is a reaction

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Dehydration

Polymerization

Addition

Substitution

Which is most acidic?

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H2O

C2H5OH

C4H9OH

CH3-CH2-CH2OH

The strongest conjugate base is

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OH-

CH3O-

C6H5O-

CH3COO-

The number of resonating structures of phenoxide ion are

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3

5

6

4

The reaction of formaldehyde with HCN is

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Nucleophilic substitution

Electrophilic substitution

Nucleophilic addition

Free radical addition

An alcohol is converted to an aldehyde with same number of carbon atoms as that of alcohol in the presence of K2Cr2O7/H2S04 the alcohol is

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CH3C(CH3)2OH

(CH3)3COH

CН3СН2СН2OH

(CH3)2CHOH

The addition compound obtained by reacting acetaldelyde and HCN, when Iydrolyzed gives

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Ethyl alcohol

Methyl cyanide

2-Hydroxy propanoic acid

Ethyl cyanide

C=O and C=C bonds are differentiated by

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Hybridization of C-atom

Bond angles

Ammonical AgNO3

Conc. HNO3

An electron with drawing group attached to e-position in phenol

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makes it basic

Stabilises the phenoxide ion

decreases its basicity

allows it to precipitate in aqueous solution

Which of the follwing dnes not give brick red precispitate wits Fehling's solution

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Acetaldehyde

Formalin

prorionaldehyde

Acetone

ln ethyl alcohol, the bond that undergoes heterolytic cleavage most readily is

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C-C

C-O

C-H

O-H

Which reagent is responsible for the conversion of ketone to secondar alcohul

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NaAlH

NaBH4

Al

Red P

Which one of the following groups is indicated when HCI is formed by reaction of ethanol with phosphorous pentachloride?

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Amino group

Halide group

Hydroxyl group

Hydride group

The dehydration of ethyl alcohol with concentrated H2SO4 at 140°C gives

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Ethene

Alcohol

Diethyl ether

Carboxylic acid

Relative acidic strength of alcohol, phenol, water and carboxylie acid is

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Carboxylic acid > Alcohol > Phenol > Water

Carboxylic acid > Phenol > Water> Alcohol

Water > Alcohol> Phenol > Carboxylic acid

Phenol > Carboxylic acid > Alcohol> Water

Tertiary alcohols have alpha bydrogens

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1

Zero

2

3

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