Question # 1

The number of acidic hydrogen present in 1- Propyne is

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1

2

3

4

Synthetic rubber is made by polymerization of.

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Chloroform

Acetylene

Divinylactylene

Chloroprene

Sodalime is

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NaOH

Mixture of Na and Ca(OH)2

KOH

Mixture of CaO and NaOH

The general formula for Alkene having one double bond is

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C_nH_2n+1

C_nH_2n

C_nH_2n-2

C_nH_2n+2

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

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Methane

Ethane

Ethene

Acetylene

The IUPAC name of C(CH3)4 is

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Iso Propyl methane

2-Methylbutane

Iso bytylmethane

2,2 dimethylpropane

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

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Saturation

Un-saturation

Substitution

None of these

Vinyl acetlylene reach with HCl to form

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Polycetylene

Benzene

Chloroprene

Divinylacetylene

Vinyl chloride when boiled with alcoholic KOH , gives

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Acetylene

Ethylene

Ethene

Ethyl alcohol

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

Which compound is least reactive

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CH3-CH3

CH2=CH2

CH=CH

C6H6

Which one of the following compounds will decolorized both acidified KMnO4 and aqueous bromine.

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Benzene

Ethane

Ethene

Methane

Vinyl acetylene combines with HCl to form

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Polyacetylene

Benzene

Chloroprene

Divinyl acetylene

Venyl acetylene combines with HCl in

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Polyacetylene

Benzene

Chloroprene

divinyl acetylene

Synthetic rubber is made by polymerization of

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Vinylaecetate

Acetylene

Divinylacetylene

Chloroprene

Which gas act as 'Blistering agent'

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Acetylene

Phosphine

Phosgene

Mustard gas

Which one of the following compounds will form red precipitate with ammoniacal cuprous chloride

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Acetylene

Ethylene

Benzene

Methane

Which one of the following can best be used to distinguish between samples of ethane and ethene

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Aqueous BaCl2

Aqueous bromine

Lime water

Litmus solution

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