Aromatic Hydrocarbons Mcqs

Our collections of Multiple choice questions and answers focuses on study of Aromatic Hydrocarbons in Chemistry. These questions are chosen from a collection of most authoritative and best reference books on Chemistry. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate knowledge on Aromatic Hydrocarbons in Chemistry comprehensively.

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2.
In benzene sulphonic acid the sulphonic group is attached with benzene ring through

Hydrogen

Oxygen

Sulphur

?OH

4.
Aniline is a derivative of benzene which contains

Imino group

Amino group

Amide group

Nitro group

6.
Nitration of chlorobenzene gives

O - chloronitrobenzene

P - chloronitrobenzene

M - chloronitrobenzene

A & b

7.
When two or more different substituents are attached with a benzene ring the number 1 position in the ring is given to a high priority group. Which one of the following groups has highest – priority?

?NH2

?CHO

?COOH

?CN

8.
When benzene is substituted by halogens only which one of the following halogens only which one of the following halogens is given the number one position in the ring while writing the name of compound?

Bromine

Chlorine

Fluorine

Iodine

10.
Which pair of groups contains both ortho & para directing groups

?OH ?RCO

?NR3 ?CN

?OCH3 ?CHO

?N (CH3)2 -NH2

11.
Michael Faraday discovered benzene in the gas which was produced by destructive distillation of vegetable oil that is done in

The presence of Oxygen

The presence of Hydrogen

The absence of Oxygen

The presence of excessive Oxygen

12.
By which method the molecular mass of benzene was determined as 78.108?

Specific gravity method

Vapour density method

X-ray diffraction method

Distillation methos

13.
How many moles of H2 are added up when benzene is heated with hydrogen in the presence of platinum?

Two

Three

Four

Six

14.
Chlorination of toluene in the presence of sublight produces

Benzyl chloride

O - chlorotoluene

P - chlorotoluene

Benzoic acid

15.
The heat of hydrogenation of cyclohexene is

?239 kJ mol-1

?208 kJ mol-1

?119.5 kJ/mol

?119.5 kcal/mol

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