Question # 1

Which of the following decides the reactivity of alkyl halides?

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C-C bond strength

C-H bond strength

C-X bond strength

Electronegativity difference

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

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

Which alcohol is most reactive towards sodium metal?

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Ter Butyl alcohol

n-Propyl alcolol

Isopropyl alcohol

Have same reactivity

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

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Ketone

Carboxylic

Alkyl halide

Ester

.Both aldehydes and ketones are planar to the neighborhoods of carbonyl (C-0) group. Which one of the following bonds is distorted towards the oxygen atoms?

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pi-bond of C and O

Sigma bond of C and O

Sigma bond of C and H

Sigma bond of C and C

Primary, secondary aad tertiary alcohols can be identified and distinguished by

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Lucas test

lodoform test

Baeyer's test

Silver mirror test

Acetaldchyde and ketone form addition product with

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Phenyl hydrazine

Hydroxylamine

Hydrazine

hydrogen cyanide

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

To distinguish aldehyde from ketone which solution is used

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Alkaline solution

Fehling's solution

A solution containing K2Cr2O7

A solution containing acid only

The reaction C2H5CI + aqueous KOH---------C2H5OH+ KCI is

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Electrophilic addition

Nucleophilic addition

Electrophilic substitution

Nucleophilic substitution

In nucleophilie substitution bimolecular reaction the order of reaction with respect to substrate

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2 order

3 order

1st order

Zero order

Which one of the following is an appropriate indication of positive iodoform test?

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Formation of H2O

Brick red precipitate

Release of H2 gas

Yellow precipitate

The species which are produced by heterolytic bond breaking and can act as electron pair donor

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Free radicals

Cations

Nucleophiles

electrophile

Which one of the following is not associated with SN2 mechanism

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100 % inversion of configuration

Tertiar alkyI halides

2nd order kinetics

Change of hy bridization from sp³ to sp² in transition state

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

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NaAlH

NaBH4

Al

Red P

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

Alcohol is less acidie than phenol due to

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higher ka value

Instability of alkoxide ion

stability of carbocation

Stability of phenol

Which of the following alcohol cannot be produced by treatment of aldehydes or ketones with NaBH4

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I-propanol

2-Methyl-2-propanol

2-propanol

Ethanol

Tertiary alcohols have alpha bydrogens

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1

Zero

2

3

Which of the following compound is least reactive

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HCHO

CH3CHO

CH3COCH3

C6H5CHO

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