Question # 1

For which mechanisms, the first step involved is the same

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E1 and E2

E2 and SN2

E2 and E1

E1 and SN1

Oxidation of secondary alcohol produces

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Aldehyde

Ketone

Alkyl halide

Ester

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

Which of the following gives silver mirror with ammonicaT AgNO3

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Benzyl alcohol

Benzene

Benzoic acid

Benzaldehyde

An amine is produced in the following reaction
C2H5l+2NH3-------C2H5NH2 +NH4l. What is mechanism?

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Electrophilic addition

Electrophilic substitution

Nucleophilic addition

Nucleophilic substitution

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

When purely alcoholic solution of sodium/potassiumhydroxide and halogenoalkanes are reacted an alkene is formed, what is the mechanism of reaction?

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Elimination

Debromination

Dehydration

Reduction

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

which of the following is not a symmetrical ketone

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4-heptanone

Butanone

Propanone

3-pentanone

^{Reaction of ethyl bromide with ammonia}

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Completes in a single step

Completes in two steps

Continues till N is left with no lone pair

is reversible

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

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

.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

What is true about an alcohol and phenol

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Both are more acidic than water

Both react with NaOH

Both produce CO2 with Na2CO3

Both, produce H2 with Na

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

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C-C

C-O

C-H

O-H

C=O and C=C bonds are differentiated by

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Hybridization of C-atom

Bond angles

Ammonical AgNO3

Conc. HNO3

The reaction of formaldehyde with HCN is

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Nucleophilic substitution

Electrophilic substitution

Nucleophilic addition

Free radical addition

Which of the following is more reactive where 0-H bonds break

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P°alcohol

T° alcohol

S°alcohol

Cannot be predicated

In the transition state of S2 mechanism reaction with alkyl halides, which of the following orbital hybridization is involved

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sp³

sp

sp²

dsp³

Which is most acidic?

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H2O

C2H5OH

C4H9OH

CH3-CH2-CH2OH

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