Question # 1

The gasoline having octane No. 100 has ______

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More knocking

Less knocking

No knocking

Only knocking

A double bond consists of:

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Two sigma bonds

One sigma and one pi bonds

One sigma and two pi bonds

Two pi bonds

Replacement of hydrogen atom by - SO₃H group in benzene is called

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Nitration

Alkylation

Sulphonation

Acylation

The characteristic reactions of alkanes are

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Addition reactions

Substitution reactions

Condensation reactions

Polymerization reactions

The self linking property of carbon is called as

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Linking polymerization

Addition

Catenation

Elimination

In ter-butyl alcohol, the tertiary carbon is bonded to

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Two hydrogen atoms

Three hydrogen atoms

One hydrogen atoms

No hydrogen atom

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0

1

2

3

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1, 5-pentadiene

Penta-1, 4-diene

1, 1-pentadiene

1, 4-pentene

The process in which orbitals of different energies and shapes mix up with each other to give equivalent is called,

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Hybridization

Polymerization

Isomerisation

Carbonization

Identify the compound formed, when ethylene combines with water in the presence of 10% sulphuric acid and HgSO₄as catalyst

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Carbinol

Methanol

Ethanol

Glycol

Which statement is true about a free radical

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An atom with a positive charge

An atom with a negative charge

An atom with a lone pair of electrons

An atom with unpaired electron

The major components of coal gas are

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Hydrogen and methane

Ethane and carbon monoxide

Nitrogen and ethane

Ethane and carbon dioxide

In sp²type hybridization the three equivalent sp²orbitals lie in the same plane and at angle of

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0°

60°

120°

180°

Which is a mixture of low boiling hydrocarbon

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Natural gas

Petroleum

Wood

Graphite

Which of the following has linear shape?

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SP

SP²

SP³

None of the above

Which of the following expressions show a heterolytic bond fission

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The process in which one s and two p orbitals mix up with each other is called

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Sp-hybridization

Sp²-hybridization

Sp³-hybridization

Dsp²-hybridization

Coal is used to bake bricks in lime kiln:

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40%

60%

80%

None of these

Gasoline is a mixture of hydrocarbons containing carbon atoms

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5 to 10

5 to 8

5 to 12

5 to 11

Who rejected the vital force theory

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Wholer

Fisher

Newton

Lewis

General formula of carbocyclic acids is:

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RCOH

RCOR

RCOOR

R-OH

Tetraethyle lead causes disease:

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Typhoid

Respiratory

Stomach

Muscular

Which reaction produces a free radical

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SN reaction

Homelytic fission reaction

Heterolytic fission reaction

Addition reaction

Which is not the poplar reaction

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Organic compounds generally react at ______ rates

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Slow

Fast

Moderate

None of them

Wohler succeeded in obtaining, urea from

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Cyanogen

Ammonium cyanate

Ammonium hydroxide

None of these

Linear shape is associated with which set of hybrid orbitals

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sp

sp²

sp³

dsp²

The formula of ketone is

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None of these

Ether shows the phenomenon of

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position isomerism

Chain isomerism

Metamerism

Cir-trans isomerism

Which of the following pair contains isomers of each other

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Propanoic acid and propanone

Acetone and acetaldehyde

Ethyl alcohol and diethyl ether

Methyl alcohol and dimethyl ether

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