Question # 1

Molecular formula of butyne is .

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C₄H₆

C₃H₄

C₄H₇

C₄H₈

____________ use for ripening of fruits.

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Ethene

Ethane

Ethyne

Propane

Olefins is a Latin word meaning:

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inert

less reactive

oil forming

most reactive

Which compound do not produce in the halogenation of methane.

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Chloroform

Carbon tetrachloride

Carbon black

Chloromethane

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

Dehydration of alcohols can be carried out with.

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NaOH

KOH

H₂SO₄

HCl

Which gas in produced during ripening of bnabanas.

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Methane

Ethene

Acetylene

Carbon dioxide

A hydrocarbon has molecular formula C₈H₁₄. What is the molecular formula of the next number of the same homologous series.

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C₉H₁₈

C₉H₁₆

C₉H₂₀

C₉H₁₂

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

In dry cleaning, which chemical is used.

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Chloroform

Carbon tetachloride

Ecetaldehyde

Ethanol

Ethylene is present is natural gas sometimes to the extent of .

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10%

20%

30%

40%

Oxidation of alkenes forms:

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Glycol

Glyoxal

Formic acid

Oxalic acid

The molecular formula of the first three members of the alkane hydrocarbons are CH_4,C₂H₆ and C₃H₈. What is the molecular formula for the eight alkane member, octane, which is found is petrol?

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C₈H₈

C₈H₁₆

C₈H₁₈

C₈H₂₀

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