Question # 1

Which hydrocarbon has no effect on an aqueous solution of bromine.

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CH₄

C₁₀H₂₀

C₂H₂

C₂H₄

How many percent of natural gas is consisted of methane.

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60%

70%

80%

85%

In shoe polished, which chemical is used.

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Ethanol

Methanol

Carbon black

Formaldehyde

Dehalogenation of tetrahalides produces acetylene. This reaction takes place in the presence of

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Sodium metal

Zinc metal

Magnesium metal

Potassium metal

Which is simplest alkane?

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CH₄

C₂H₈

C₂H₂

C₂H₄

Oxidation of alkenes produce.

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Glyoxal

Glycol

Oxalic acid

Formic acid

In dry cleaning, which chemical is used.

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Chloroform

Carbon tetachloride

Ecetaldehyde

Ethanol

Incomplete combustion of alkanes produce.

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Carbon dixoide only

Carbon monoxide only

Carbon monoxide carbon black and water

Carbon dioxide and carbon black

Alkanes do not react in

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Diffused sunlight

Dark

Bright sunlight

None of these

Incomplete combustion of alkanes produces.

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Carbon dioxide only

Carbon monoxide only

Carbon monoxide and carbon black

Carbon dioxide and carbon black

Dehydration of alcohols can be carried out with.

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NaOH

KOH

H₂SO₄

HCl

Dehydrohalogenation takes place in the presence of .

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NaOH aqueous

Alcoholic KOH

Aqeous KOH

Alcoholic NaOH

Chemical formula of chloroform.

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CH₃Cl

CH₂O₂

CHCl₂

CCl₄

Marsh gas is mostly consisted of.

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Butane

Propane

Ethane

Methane

When bromine water is added to acetylene its red-brown colour is changed into:

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red

green

violet

discharged

Which compound do not produce in the halogenation of methane.

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Chloroform

Carbon tetrachloride

Carbon black

Chloromethane

The alkanes consisting of C₅ to C₁₀

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gases

liquids

solid

plasma

Molecular formula of butyne is .

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C₄H₆

C₃H₄

C₄H₇

C₄H₈

Alkanes give reaction only

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Addition

Decomposition

Substitution

Displacement

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