Question # 1

Which of one of the following is used as as fumigant:

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Ethyl alcohol

ethylene oxide

ethylene glycol

diethyl ether

Benzene is formed by the polymerization of.

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Alkene

Alkane

Acetylene

Methane.

General formula of alkenes.

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C_n H_2n-2

C_nH_2n

C_nH_2n+2

C_nH_2n-1

Which is simplest alkane?

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CH₄

C₂H₈

C₂H₂

C₂H₄

Olefins is a Latin word meaning:

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inert

less reactive

oil forming

most reactive

The reduction of alkyl halides takes place in the presence of

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Zn/HCl

Na/HCl

Mg/HCl

Cu/HCl

Which one of these is a saturated hydrocarbon?

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C₂H₄

C₃H₆

C₄H₈

C₅H₁₂

How many percent of natural gas is consisted of methane.

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60%

70%

80%

85%

The order or reactivity of hydrogen halides with alkenes is.

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HI/Br

HBr > HI

HCl > HBr

HBr>HCl

Alkanes give reaction only

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Addition

Decomposition

Substitution

Displacement

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

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10%

20%

30%

40%

Marsh gas is mostly :

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ethane

methane

butane

propane

Dehydrohalogenation takes place in the presence of .

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NaOH aqueous

Alcoholic KOH

Aqeous KOH

Alcoholic NaOH

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