Question # 1

Which are called paraffines?

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Alkyle

Alkynes

Alkenes

Alkanes

General formula of alkynes is:

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C_nH_n

C_nH_2n

C_nH_2n+2

C_nH_2n-2

Alkanes give reaction only

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Addition

Decomposition

Substitution

Displacement

Hydrogenation of alkenes and alkynes may be carried out at room temperature in the presence of catalyst:

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Pt or Pd

Ni

Zn

Fe2O3

Halogenation of alkanes in the presence of diffused sunlight takes place.

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Suddenly, only in one step

Slowly in one step

In a series of step

Fastly in two steps

Chemical formula of chloroform is :

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CH₂Cl₂

CH₃Cl

CHCl₃

CCl₄

Alkanes do not react in

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Diffused sunlight

Dark

Bright sunlight

None of these

Benzene is formed by the polymerization of.

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Alkene

Alkane

Acetylene

Methane.

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

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CH₄

C₁₀H₂₀

C₂H₂

C₂H₄

The general formula of alkynes is

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C_nH_2n

C_nH_2n+2

C_nH_2n-2

C_n H_2n+1

The end product of oxidation of acetylene is .

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Oxalic acid

Glyoxal

Glycol

None of these

Dehydrohalogenation of vicinal-dihalides take place in the presence of.

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NaOH

KOH

NaCl

None of these

Oxidation of alkenes produce.

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Glyoxal

Glycol

Oxalic acid

Formic acid

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