Question # 1

Which gas is used for welding purposes

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Butane

Nitrogen

Methane

Acetylene

Hybridization of each carbon atom in benzene ring is

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sp hybridized

sp²hybridized

sp³

dsp²

Th IUPAC name of the compound having formula (CH3) 3 C - CH = CH2 is

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1, 1-Dimethyl-3-butene

1,1,1-Trimethyl-3-propene

3,3,-Dimenthyl-1-butene

3,3,3,-Trimethyl-1-propene

Synthesis rubber is made by polymerization :

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Chloroform

Acetylene

Divinyl acetylene

Butene

Ethylene combines with water in the presence of H₂SO₄+ HgSO₄and forms

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Ethyle chloride

Ethyle alcohol

Carboxylic acid

None of these

The electron releasing effect of methyl group is significant and it makes ring a good

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Electrophilic

Nucleophilic

Nucleophobic

Hydrophobic

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Pent -1-ene-3-yne

2-pentyne-4-ene

1-pentene-3-yne

Pent-2-yen-4-ene

Substituted phenyl groups are called

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acyl groups

phenyl groups

Aryl groups

Alkyle groups

The molecule of ethane possess which hybrization

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sp³

sp²

sp

sp²d

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

Which reaction is too vigorous to control

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Chlorination

Bromination

Iodination

Fluorination

How many isomeric disubtituted products are obtained by the introducing of second group in the ring

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Two

Three

Four

None

The saturated hydrocarbons usually end with suffix ______

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Ane

Ene

Yne

Oic

Marsh gas was the name given to

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Methane

Ethane

Propane

Butane

Octane number can be changed by

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Isomerisation

Alkylation

Cyclisation

All of these

Substitution of halogen in the benzene ring requires catalyst

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AlCl₃

FeCl₃

SiO₂

Organo - nickel

The hydrocarbons having double bonds normally end with suffix

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Ane

Ene

Yne

Oic

To differentiate isomers we use

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n-

iso-

neo

All of them

Which class of compound is more reactive

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Alkane

Alkene

Alkyne

None

Sp³hybird orbitals are oriented at an angle of

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107.5°

108.5°

109.5°

103.5°

The order of reactivity of halogens in aliphatic substitution reactions is

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Br2 > C12 > F2

C12 > Br2 > F2

C12 C12 > Br2

F2 > Br2 > C12

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

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CO

CO₂₊H₂O

H₂CO₃

None

Hybridization in alkanes is:

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sp

sp²

sp³

dsp²

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Other Links

ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons Online Test MCQs With Answers

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