Question # 1

Which of the following ketone will not give iodoform test

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Methyl isopropyl ketone

Dimethyl ketone

Ethyl isopropyl ketone

2-hexanone

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

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Acetaldehyde

Formalin

prorionaldehyde

Acetone

Acetaldchyde and ketone form addition product with

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Phenyl hydrazine

Hydroxylamine

Hydrazine

hydrogen cyanide

The compound that reacts the slowest in Lucas test

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1-Pentanol

sec-butyl alcohol

3-Pentanol

ter- butyl alcoho

Oxidation of secondary alcohol produces

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Aldehyde

Ketone

Alkyl halide

Ester

What forces operate between ethyl group of ethyl alcohol and oxygen of water

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H-bonding

attractive forces

repulsive forces

dipole forces

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 of the substance is not going to react the sodium metal:

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Acetic acid

Methanol

Di methyl ether

Ethanol

2-propanol on oxidation yield

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Propionaldehyde

Propanone

Propanal

Butanal

In which of the following types of reactions are the carbonyl compounds and alkene are similar in behaviour

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Nucleophilic addition

Electrophilic addition

Nucleophilic suhstitution

Catalytic hydrogenation

Formalin contains-------% alcohol.

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37

80

8

52

Identify the compound, which give iodoform test

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Methanol

3- Hexanol

Methyl ketone

Propionaldehyde

Which of the following gives silver mirror with ammonicaT AgNO3

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Benzyl alcohol

Benzene

Benzoic acid

Benzaldehyde

Which of the following test is not given by aldehvde

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2. 4 DNPH test

NaHSO3 test

Tollen's test

Sodium nitroprusside test

Acetone reacts with HCN to form a cyanohydrin. It is an example of

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Nucleophilic addition

Electrophilic substitution

Electrophilic addition

Nucleophilic substitution

Which of the following does not give yellow precipitate with I2+ NaOH

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Acetone

Benzaldehyde

Acetildehyde

Acetophenone

CH3CH2CH2OH--------A---------B Here B is

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Propyne

Propanal

Propene

Propane

Consider the following reaction
R-CHO + 2Ag(NH3)2OH + R-COONH+ +2Ag+2NH3+H2OThis reaction represents

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Fehling test

Ninhydrin test

Benedict lest

Tollen's test

Which one of the followings is resistant to oxidation under normal conditions

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Methyl alcohol

Acetaldehyde

Ethyl alcohol

Acetone

The reaction of formaldehyde with HCN is

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Nucleophilic substitution

Electrophilic substitution

Nucleophilic addition

Free radical addition

Phenol is completely soluble in water above

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25°C

62.3℃

68.5°C

66.50°c

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

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

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

Reactivity of carbonyl compounds is due to

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Electrophilic carbon

Less stearic hindrance

Unsaturation of Co

Polarity of bond

The starting substance for the preparation of iodoform is any of the following, except

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СН3СН(ОН)CН3

CH3CH2ОН

HCH2OH

CH3COCH3

Propanone does not undergo

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Oxime formation

Reduction of Fehling solution

Hydrazone formation with hydrazine

Reaction with HCN

Reaction of alcohol with hydrogen chloride, in the presence of Zinc chloride yields

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Ketone

Carboxylic

Alkyl halide

Ester

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