Question # 1

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Addition Elimination

Addition Reduction

Elimination Reduction

Substitution Elimination

Which of the following pair contains isomers of each other

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Propanoic acid and propanone

Acetone and acetaldehyde

Ethyl alcohol and diethyl ether

Methyl alcohol and dimethyl ether

A nuclophile must

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Be an atom

A group of atoms

Have a lone pair

Be negatively charged

Peat before conversion to bituminous coal is converted to

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Lignite

Anthracite

Asphalt

None

The gasoline having octane No. 100 has ______

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More knocking

Less knocking

No knocking

Only knocking

The structure of benzene is

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Hexagonal

Pyramidal

Square planer

Tetrahedral

The state of hybridization of carbon atom in methane is

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sp³

sp²

sp

dsp²

The chemist who synthesized urea from ammonium cyanate was

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Berzelius

Kolbe

Wholer

Lavoisier

Wohler succeeded in obtaining, urea from

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Cyanogen

Ammonium cyanate

Ammonium hydroxide

None of these

The branch of chemistry which deals with the study of compounds containing carbon as an essential elements is called

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Physical

Inorganic

Nuclear

Organic

In ter-butyl alcohol, the tertiary carbon is bonded to

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Two hydrogen atoms

Three hydrogen atoms

One hydrogen atoms

No hydrogen atom

Major component of natural gas is:

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Ethane

Ethene

Propane

Methane

The catalyst,. which is used as specialist for cracking, are

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Aluminates

Alumlnosilicates

Aluminium slats

All can be used

In alkynes the bonds between carbon atoms are

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All sigma bonds

All pi(π) bonds

One is sigma and two areπ(pi) bonds

One isπ(pi) and two are sigma bonds

The bond angle between hydrogen atoms and carbon in alkane is

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104.5°

107.5°

109.5°

120.5°

Cracking normally gives smaller ______

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Alkanes

Alkenes

Alkynes

Both a and b

The formula of esters is

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Types of cracking are:

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Thermal

Catalytic

Steam

All a, b ,c

Which is a mixture of low boiling hydrocarbon

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Natural gas

Petroleum

Wood

Graphite

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3

4

5

2

Which of the following expressions show a heterolytic bond fission

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Homologues differ from each other by an integral number of

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CH₂groups

CH₃groups

CH groups

CH₄groups

Hydrocarbons contain

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C and S only

C and H only

C, H, and O only

C, H, O and N only

In a heterollytic bond fission reaction

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A molecule of H₂O is formed

A molecule of H₂O is eliminated

A free radical is formed

A positive and a negative ion is formed

Angle 120° is observed in molecules :

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CH₄

CH_3-CH₃

CH -CH

CH_{2 =}CH₂

The general formula for alkenes is

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C_nH_2n+1

C_nH_2n+2

C_nH_2n

C_nH_2n-2

Which of the following posses linear geometry

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Alkane

Alkene

Alkyne

Benzene

Compounds having same molecular formula but different structures are said to be

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Monomers

Isomers

Metamers

Tautomers

A free radical reaction takes place in three steps, initiation, propagation and terminations. Which of the following expression represents a propagation step

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The functional group isomer of dimethylether is

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Ethyl alcohol

Propyl alcohol

Diethyl ether

Butyl alcohol

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