Question # 1

Alkenes normally have ______ geometry

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Tetrachedral

Linear

Planer

None

Hydrocarbon which is liquid at room temperature is

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Pentane

Butane

Propane

Ethane

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

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Chlorination, nitration, reducing

Nitration, chlorination, reducition

Nitration, reduction,chlorination

Nitration, reduction, acylation, chlorination, hydrolysis

The order of dehydration of alcohol

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10> 20> 30

10> 30> 20

20> 30> 10

30> 20> 10

Which one of following is not monocyclic aromatic hydrocarbon

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Benzaldehyde

Benzoic acid

Benzene sulfonic acid

Biphenyl

Which of the following is not an ortho-para directing group

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An organic compound, on treatment with Br2 in CC14 gives bromoderivative of an alkene. The compound will be

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CH3 - CH = Ch2

CH3CH = CHCH3

HC = CH

H2C = CH2

During nitration of benzene, the active nitrating agent is

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NO3

NO2+

NO2-

HNO3

acetylene can be converted into-while passing through a Cu-tube at 300°C:

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Glyoxal

Vinyl acetylene

Vinyl alcohol

Benzene

The hydrocarbon which is used as an illuminating agent

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Methane

Methene

Methyne

B & C

Substituted phenyl groups are called

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acyl groups

phenyl groups

Aryl groups

Alkyle groups

Eletronegativity difference in C-C bond in alkanes is:

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Zero

Double

Half

4.0

CnH_2nis the general formula of

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Alkanes

alkynes

None of above

In which one of the following compound rings are not fused together at ortho positions

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Phenanthrene

Naphthalene

Diphenyemethane

Anthracene

All C - H bond lengths of benzene ring is

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1.07A°

1.09A°

1.08A°

None

When benzene is burnt in free supply of air, it is completely oxidized to

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CO

CO₂₊H₂O

H₂CO₃

None

Alkynes are colourless & odouless except

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Acetylene

Propyne

Butyne

Pentyne

Mustard gas is a :

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Gas

Liquid

Solid

High boiling point

Marsh gas was the name given to

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Methane

Ethane

Propane

Butane

Preparation of vegetable ghee involves:

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Halogenation

Hydrogenation

Hydroxylation

Dehydrogenation

The electrophile in aromatic sulphonation is

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H₂SO₄

HSO₄

SO₃

SO₃⁺

Write the name of following compound

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5 - methyle - 2- hexene

2 - methyle hexene

4 - ethyle - 2 - methyle hexene

3 - ethyle - 3 - methyl hexene

The reaction in which ketone is reduced to the alkane is called

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Kolb

Clemmensen

Cannizzaro

None

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