Question # 1

Alkanes are soluble in all except

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Benzene

Ether

Water

Carbon tetra chloride

Alkyl halides when reduced with nascent hydrogen in the presence of Zn + HCI, are converted to

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Alkynes

Alkenes

Alkanes

Alcohol

An alkynes having Carbon count of 20 is

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gas

liquid

Solid

None

Hybridization in alkanes is:

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sp

sp²

sp³

dsp²

Benzene is obtained from benzene sulphonic acid by treating with

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HCl

NaOH

H₂O

NaHCO₃

Which gas is produced by treating CaC₂with water

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Methane

Ethane

Acetylene

HCI

Which reaction is too vigorous to control

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Chlorination

Bromination

Iodination

Fluorination

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

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Saturation

Unsaturation

Subsitution

None

The sp²hybird orbitals are oriented in space at one angle

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180°

109.5°

100°

120°

If we remove one hydrogen atom from an alkane we obtain a group called

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Acetyle group

Formyle group

Alkyle group

Ketyle group

How many molecules of chlorine adds in benzene in the presence of sunlight

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One

Two

Three

Four

A six membered ring containing one double bond called

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Cyclohexene

Cyclohexane

Cyclohexadiene

None

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

CnH_2nis the general formula of

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Alkanes

alkynes

None of above

To differentiate isomers we use

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n-

iso-

neo

All of them

The electron releasing effect of methyl group is significant and it makes ring a good

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Electrophilic

Nucleophilic

Nucleophobic

Hydrophobic

Toluene is also called

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Hydroxyl benzene

Methyl benzene

ethyl benzene

None

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

Benzene has a -------- structure

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Pentagonal

Hexagonal

Heptagonal

Tetragonal

Hydrocarbon which is liquid at room temperature is

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Pentane

Butane

Propane

Ethane

Ethylene polymerizes at 100 atm pressure and 400°C to give

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Polybenzene

Polyalcohol

Polypropylene

Polyethylene

Vinyl acetylene combines with HCI to form

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Poly acetylene

Benzene

Chloroprene

Divinylacetylene

Introduction of a second methyl group in methylbenzene will give how many isomeric dimethyllenzenes

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2

1

3

4

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