Question # 1

The order or reactivity of hydrogen halides with alkenes is.

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HI/Br

HBr > HI

HCl > HBr

HBr>HCl

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 hydrocarbon has no effect on an aqueous solution of bromine.

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CH₄

C₁₀H₂₀

C₂H₂

C₂H₄

Carbon Tetra chloride is used in .

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Fertilizer

Dry cleaning

Metallurgy

Anesthesia

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

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Ethyl alcohol

ethylene oxide

ethylene glycol

diethyl ether

Chloroform is used for

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Anesthesia

Fever

Link

Toys

General formula of alkenes.

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C_n H_2n-2

C_nH_2n

C_nH_2n+2

C_nH_2n-1

____________ use for ripening of fruits.

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Ethene

Ethane

Ethyne

Propane

The reduction of alkyl halides takes place in the presence of

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Zn/HCl

Na/HCl

Mg/HCl

Cu/HCl

Halogenation of methane produces following valuable chemical compounds used as solvents except.

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Carbonterachloride

Chloroform

Carbon Black

Chloromethane

Traces of acetylene are present to coal gas about.

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0.06 %

0.08%

1.1 %

90%

Which one of the following is gas at room temperature:

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C2H6

C6H14

C6H6

C8H18

Alkynes are also called.

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Olefine

Ethene

Paraffins

Acetylenes

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Chemistry 10th Class English Medium Unit 12 Online Test MCQs With Answers

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