Question # 1

a- pinene hydrochloride on warming rdarranges to form bornyl chloride.The rearrangement is known as.

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Pinacol pinacolone

Hofinann

Wager Mecrwein

Wolff

Phenol on reaction with ethanoic anhydrides in the presence of sodium ethanoate gives.

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Phenyl benzoate

Ethyl benzoate

Phenyl ethanoate

Phenyl methyl ether

Which statement is true.

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Resonance hybride are inherently unstable.

Resonance hybride are more static than any individual resonance form

Resonance hybride are average of all resoance forms resembling the more stabel forms

None of the above

The IUPAC name of ethylene oxide is.

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Epoxy methane

Oxcethene

Methoxymethane

All of the above

An organic liquid (X) containing C, H and H has a pleasent odour with a boiling point of 78 oC. On boiling X with conc. H2SO4 a colourless gas is produced which decolourless bromine water and alkaline KMnO4 One mole of this gas also takes one mole of H2. The organic liquid (X) is.

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n-C3H7OH

iso-C3H7OH

C2H5CHO

CH3CH2OH

Which of the following statements in not correct with respect to the important characteristics of aromatic compounds.

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They are usually cyclic compounds

They are resistant to usual addition reactions

They usually undergo substitution reactions

They are less stable

When the colourless liquid chlorobenzene is shaken with bromine water, the chlorobenzen becomes a yellow-orange colour. Which of the following is the best interpretation of this.

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An addition compound of chlorobenzene and bromine has been formed.

The chlorine atom has been replaced by a bromine atom

The bromine is mor esoluble in chlorobenzene than in water

A hydrogen atom has been replaced by a bromine atom

The decrease in electron density at one position accompanied by a corresponding increase at other position is called.

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Inductive effect

Asymmetric effect

Electromeric effect

Resonance effect

Oxidative enzymes are responsible for

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Biological processes

Biological oxidation

Biological hydrolysis

Biological isomerisation

Which of the following molecules can oxhibit geometrical isomerism.

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CH3CH = CH2

CH3CH = CHCH3

(CH3)2 C = CH2

CH3CH = C(CH3)2

1-Butyne on oxymereuration -demercuration would give.

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Butanone

Butanal

Propanol and methanol

Propanoic acid and formic acid

If reaction A has an activation energy of 250 kj and reaction activation energy of 100 kj, which of the following statements must be correct.

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If reaction A is exothermic and reaction B is endothermic then reaction A is favored kinetically

At the same temperature the rate of reaction B is greater than the rate of reaction A

The energy of reaction A must be greater than the energy of reaction B.

The energy of reaction B must be greater than the energy of reaction A

The dyes which are produced on the fibre in suit by reactions are known as.

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Mordant dyes

Fast dyme

Ingrain dyes

Disperse dyes

C is -2 butene on reaction with bromino give 2,3 -dibromobutane which is

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Recemic mixture

Meso isomer

Dextoroisomer

Levoisomer

When alkyl iodidies are decomposed by light then the product obtained is.

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R - R

R - H

RCH2I

RCHI2

Chlorine when attached to benzene has

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+1 and + R effect

-1 and - R effect

-1 and +R effect

None of the above

Glycerol on dehyeration gives

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Allyl alcohol

Aerolein

CHOH = C= CHOH

-CHO -CHOH -CH2OH

Which of the following statement in not correct with respect to inductive effect.

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Bond length decrease with increase in inductive effect.

Inductive effect generates polar character in bonds

Variation in strength of aliphatic acids can be explained

It alone cna explain the basically of triphenylamine

A mordants is substance which in

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Coloured

Leuco -base of a dye

Fixes dye on the fabric

All of these

The electrophile in the sulphonation of benzene is.

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SO3

SO3H

HSO4

SO2

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