Organic Chemistry Mcqs

Our collections of Multiple choice questions and answers focuses on study of Organic 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 Organic Chemistry comprehensively.

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16.
Compounds having same molecular formula but differ in structural formula are called

Polymer

Monomer

Isomer

Allotropes

20.
Methane is used in power generation in chemical industries being a

Natural gas

Good caloric value

Cheaper

All

21.
Crude oil is blackish coloured liquid produced after the decay of organic matter present between

Earth layer

Mountains

Sedimentary rocks

Rocks

22.
The precess in which larger molecule with higher molecular weight breaks down into smaller moleucles with lower molecular weight

Polymerization

Pyrolysis

Isomerism

No such process occurs

23.
At low temperature and pressure cracking can be done in presence of catalyst

Al2O3

Fe2O3

Al2O3 and SiO2

Fe2O3 and SiO2

24.
The metallic sound produced by engine due to the pre-ignition of fuel is called

Knocking

Reforming

Cracking

A and c

25.
Which one of the following compounds shows intense knocking?

N-pentane

Iso-heptane

Iso-octane

N-heptane

26.
Which of the following can be used as anti-knocking agent.

PbCl2

(C2H5)4 Pb

(C2H5)2 Pb

All of the above

28.
Isomerism which is present only in alkene is

Structural isomerism

Metamerism

Cis-trans isomerism

Both b and c

29.
A single atom or group of atoms which gives characteristic properties to a compound is called

Radical

Hydrocarbon

Functional group

Ion

30.
Compound containing benzene ring in their structure are

Aliphatic

Aromatic

Carboxylic acid

Carbohydrates

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