Question # 1

The presence of a double bond in a compound is the sign of

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Saturation

Un-saturation

Substitution

None of these

Which one of the following gases is used for artificial ripening of fruits

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Ethene

Ethyne

Methane

Propane

Which compound is the most reactive

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Benzene

Ethene

Ethane

Ethyne

In which reactions alkane is not produced

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Subatier's and Sendern reaction

Koibe's reaction

Wolf -Kishner's reduction

Dow's process

Formula of choloroform is

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CH₃Cl

CCl₄

CH₂Cl₂

CHCI₃

Ranney nickel is prepared by reacting dilute NaOH solution with.

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Nickel

Brass

Nickel and aluminum alloy

Nickel oxide

Which is called marsh gas

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S2Cl2

SOCl2

CH4

CHBr3

Vinyl acetylene combines with HCl to form

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Polyacetylene

Benzene

Chloroprene

Divinyl acetylene

Synthetic rubber is made by polymerization of.

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Chloroform

Acetylene

Divinylactylene

Chloroprene

Which one of the following gases is used in welding purpose usually

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Methane

Ethane

Ethene

Acetylene

Which one of the followings is major product when HBr reacts with 2-butene

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2- bromobutane

1- bromobutane

1-1 di bromobutane

1,2 di bromobutane

Which one of the followings is not observed in the combustion of pure methane in a plentiful supply of air

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Water in produced

CO2 is produced

The flame is smoky

Energy is released

Raney Nickel is

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Nickel compound

Naturally occurring nickel

Spongy form of a nickel

Alloy of nickel

When ethyl alcohol is heated with conc. H2SO4 it produces ethene. The temperature required is as proximately

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100 ^oC

78 ^oC

Above 200 ^oC

140- 170 ^oC

When methane reacts with Cl₂in the presence of diffused light the products obtained are

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Chloroform only

Carbon tetrachloride only

Chloromethane and dichloromethane

Mixture of a, b, c

Which has reddish brown colour.

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silver acetylide

Copper acetylide

BaSO4

Aqueous KMnO4 solution

An aldehyde is reduced to alkane with hydrazine is the presence of

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KOH

NaOH

CaO and NaOH

Ca(OH)2

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