Question # 1

When acetylene is heated at 300 ^oC in copper tube, the product obtained is.

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Benzene

Alkyl benzene

Ether

Alcohol

Aromatic hydro carbon are the derivatives of

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Normal series of paraffins

Alkene

Benzene

Cyclohexane

Aromatic hydrocarbons are the derivatives of

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Normal series of paraffins

Alkene

Benzene

Cyclohexane

The aromatic ring of Benzene can be hydrogenated in the presenc eof.

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Pt

Rh

Sunlight

O3

The benzene molecule contains

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three double bonds

two double bonds

one double bond

delocalized pie-electron charge

Structure of benzene is

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Tetrahedral

Trigonal planar

Hexagonal planar

Linear

During nitration of benzene, the active nitrating agent is

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NO₃

NO₂⁺

NO₂^-

HNO₃

The benzene molecule contains.

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Three double bonds

Two double bonds

One double bonds

Delocalized sigma electron charge

Hydrolysis of benzene sulphonic acid with superheated steam or by boiling with dil HCl gives.

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Toluene

Benzene

Xylene

Chlorobenzene

Which group when attached with benzene increases electron density of ring.

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-COOH

-NO

-CHO

-CH3

The number of possible isomers of xylene are

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2

3

4

5

Which catalyst is used Friedel Crafts reactions

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AlCl₃

BeCl₂

NaCl

HNO₃

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Chemistry Fsc Part 2 Chapter 9 Online Test MCQs With Answers

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