Question # 1

Which is more active ?

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Alkanes

Alkenes

Alkynes

Benzene

Catalytic oxidation of alkanes is used for the preparation of

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Adehydes

Fatty acid

Carbonyylic acids

Ketones

Benzene does not undergo polymerization and it is also resistant to

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Reduction

Oxidation

Alkylation

Ozonolysis

What is not a common use of methane

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As a fuel

For the preparation of haloaklanes

For the preparation of methyl alcohol

For the preparation of sulphuric acid

Alkanes are generally not reactive towards acids, alkalis, oxidation or reuducing agents. They however undergo some reactions, which one is the reaction undergone by alkanes

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Elemination

Addition

Free radical substitution

Nucleophilic substation

Which of the following method is most appropriate for the manufacture of methane?

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By reduction of CH2CL2

Wurtz reaction

Liquification of natural gas

None of these

Alkynes are colourless & odouless except

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Acetylene

Propyne

Butyne

Pentyne

The treatment of benzene with isobutene in the presence of sulphuric acid give

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isobutyl benzene

tert-Butyl benzene

n- Butyl benzene

no reaction

C₁₈and onward hydrocarbons are normally

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Gases

Liquids

Solids

Plasma

The process in which orbitals of different energies and shapes mix with each other to give equivalent hybrid orbitals is called

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Isomerization

polymerization

Hybridization

Resonance

acetylene can be converted into-while passing through a Cu-tube at 300°C:

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Glyoxal

Vinyl acetylene

Vinyl alcohol

Benzene

Cyclohexane can be converted not benzene in the presence of

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Pt at 100°C

Pt at 250°C

Pd at room temperature

Pt at room temperature

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

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Ethane

Ethyne

Methane

Propane

Boiling point of n-butane is:

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-102°C

-75°C

-55°C

55°C

"Each different compound should have a different name" was published by IUPAC system of nomenclature in

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1892

1830

1947

1979

The geometry of acetylene is

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Angular

Bent

Trigonal

Linear

A single benzene ring can have ______ ortho position maximally

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One

Two

Three

Four

Which can be used for dehydration of alcohol

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P₄O₁₀

H₂SO₄

H₃PO₄

All of them

Sp³hybird orbitals are oriented at an angle of

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107.5°

108.5°

109.5°

103.5°

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

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Chlorination, nitration, reducing

Nitration, chlorination, reducition

Nitration, reduction,chlorination

Nitration, reduction, acylation, chlorination, hydrolysis

Ethylene can be prepared in the laboratory by heating together ethyl alcohol and

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HCI

Phenol

HF

H₂SO₄

Alkanes containing carbon C₁₈ownwards are

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Gases

Liquids

Waxy solids

Solids

Mustard gas is a

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Gas

High boiling speed

High melting liquid

Steam

Which of the following is not an electrophitic substitution reaction of benzene

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Nitration

Sulphonation

Fridel-Craft alkylation

Free radical chlorination of benzene

The reaction in which ketone is reduced to the alkane is called

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Kolb

Clemmensen

Cannizzaro

None

The benzene molecule contains

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Three double bonds

Two double bonds

One double bonds

Delocalizedπ-electron charge

The nitration of benzene takes place when it is heated with a mixture of conc.HNO₃and conc. H₂SO₄at 50°C in ratio of

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1 : 2

1 : 1

1 : 3

2 : 1

The temp. used for the hydrogenation of alkenes using Ni is

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2000°C

400°C

200-- 300°C

1000°C

Synthesis of rubber is made by polymerization of

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Chloroform

Acetylene

Divinylacetylene

Butene

In CH₄, all the H-C-H bond angles are

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120°

107°

109°

109.5°

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4-methyl pentene

2-methyle-1-butene

2-methyl propane

None of the above

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