Question # 1

Which isomer of C4H9Br will produce 2-methyl propane-2-ol on treatment with aqueous KOH

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n-butyI bromide

Sec-butyI bromide

Isobutyl halide

Tertiary butyl chloride

Correct order for the reactivity ofalkyl halide in S, reactions

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R-I>R-F>R-CI

R-F>R-CI>R-I

R-I>R-CI>R-F

R-CI>R-I>R-F

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

Phenol can be diatingushed from ethyl alcohol by all of the following reagents except

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lodoforrn test

Na

Br2 /H2O

NaOH

The average bond energy of C-Br is

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228 kJmol-1

250 kJmol-1

200 kJmol-1

290 kJmol-1

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

Ethyl alcohol reacts with PCL and produces:

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Haloalkane

Alkyl halide & H3PO3,

Alkyl halide & POCl3

Alkyl halides &H3PO4.

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

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NaAlH

NaBH4

Al

Red P

One of the following can produce greater number of moles of ethyl chloride on reacting with escess of ethanol

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PCI5

PCI3

HCI/ZnCl2

SOCI2

A compound z' decolorizes bromine water and produces white ppt. The compound 'z'is

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Alkane

Alcohol

Phenol

Benzene

A student mixed ethyl alcohol with small amount of sodium dichromate and added it to the hot solution of dilute sulphuric acid. A vigorous reaction took place. He distilled the product formed immediately. What was the product?

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Aceton3

Dimethyi ether

Acetic acid

Acetaldehyde

Which one of the following is NOT a nucleophile

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NH2+

BF3

H2O

CH3-

The red brown ppt. of Fehling solution and benedict solution tests are of

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Ag

Cu2O

CuO

AgBr

Propanone does not undergo

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Oxime formation

Reduction of Fehling solution

Hydrazone formation with hydrazine

Reaction with HCN

The reaction of formaldehyde with HCN is

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Nucleophilic substitution

Electrophilic substitution

Nucleophilic addition

Free radical addition

Oxidation of secondary alcohol produces

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Aldehyde

Ketone

Alkyl halide

Ester

SN2-reactions can be usually observed in

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Primary alkylı halide

secondary alkyl halide

Tertiary alkyl halide

Both A. and B

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

Which of the following reactants will be required to form ethene from ethyl chloride

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_{Alcoholic KOH}

Alkaline KMnO4

Aqucous KOH

Aqucous NaOH

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

The compound that reacts the slowest in Lucas test

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1-Pentanol

sec-butyl alcohol

3-Pentanol

ter- butyl alcoho

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