Question # 1

The term aromatic was derives from

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Greek word

Latin

Russian

English

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 one of following is not monocyclic aromatic hydrocarbon

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Benzaldehyde

Benzoic acid

Benzene sulfonic acid

Biphenyl

When benzene is burnt in free supply of air, it is completely oxidized to

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CO

CO₂₊H₂O

H₂CO₃

None

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

Which of the following reaction is characteristic of benzene

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Electrophilic substitution reaction

Reduction

Oxidation

Ozonolysis

Which of the following decolorized Br₂-water

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Methane

Ethane

Ethene

Propane

When an aqueous solution of potassium salt of monocarboxylic acid is subjected to electrolysis, corresponding alkane is formed. This reation is known as

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Cannizaro reaction

Sabatier-secderens reaction

Alkylation

Kolbe's reaction

The alkynides are used for the ----------- of alkynes

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Pxperation

Purification

Seperation

All of above

Hybridization of each carbon atom in benzene ring is

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sp hybridized

sp²hybridized

sp³

dsp²

An organic compound, on treatment with Br2 in CC14 gives bromoderivative of an alkene. The compound will be

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CH3 - CH = Ch2

CH3CH = CHCH3

HC = CH

H2C = CH2

An alkynes having Carbon count of 20 is

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gas

liquid

Solid

None

The addition of HBr is easiest with

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CH2 = CHCl

CICH = CHCl

CH3 - CH = CH2

(CH3)2 C = CH2

Alkenes normally have ______ geometry

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Tetrachedral

Linear

Planer

None

When sodium benzoate is treated with soda lime (NaOH) benzene is formed. What is the other product

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Na₂CO₃

NaHCO₃

Ca(OH)₂

CaCO₃

Amongst the following the compound that can be most readily sulphonated is

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Toluene

Benzene

Nitrobenzene

Chlorobenzene

Kolb's method of alkanes production, is actually

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Hydrolysis

Catalysis

Electrolysis

Hydrogenation

Alkanes are soluble in all except

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Benzene

Ether

Water

Carbon tetra chloride

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

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Glyoxal

Vinyl acetylene

Vinyl alcohol

Benzene

β-β- dichloroethyle sulphide is commonly known as:

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Mustared gas

Laughing gas

Phosgene gas

Bio gas

The C-C bond angles in benzene ring are

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119°

120°

121°

None

Sulphuric acid generates nitronium ion by reacting with

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Nitric acid

Nitrogen gas

Nitrous acid

Potassium nitrate

Which one of the following is (m-xylene)

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1,2 dimethyl benzene

1,3 dimethyl benzene

1,5 dimethyl benzene

1,4 dimethyl benzene

The next homologue of C₁₀H₂₂will be

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C₉H₂₀

C₁₂H₂₆

C₁₁H₂₄

C₁₃H₂₈

Which is the used as test for the presence of alkenes

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Reaction of cold dilute alkaline KMnO₄

Combustion

Polymerization

Catalytic hydrogenation

In CH₄, all the H-C-H bond angles are

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120°

107°

109°

109.5°

Most common reactions of benzene and its derivatives are

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electrophilic addition reactions

electrophilic substitution reactions

Nucleophilic addition reactions

Nucleophilic subtitution reactions

The four bonds of carbon in methane are directed towards the corners of

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Cube

Pentagon

Hexagon

Tetrahedron

Sp³hybird orbitals are oriented at an angle of

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107.5°

108.5°

109.5°

103.5°

Ethylene decolorizes cold dilute solution of KMnO₄. This test is known as

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Colouration test

Baeyer's test

Silver mirror test

Ring test

Benzene is obtained from benzene sulphonic acid by treating with

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HCl

NaOH

H₂O

NaHCO₃

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