ECAT Pre Engineering Chemistry Chapter 19 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons

Try The MCQ's Test For ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons

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ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons

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Question # 1

Polymerization of ethane take place at pressure of 100 atm and a temperature of

Question # 2

Benzene can be obtained by heating either benzoic acid with X or phenol with Y. X and Y are respectively

Question # 3

The geometry of acetylene is

Question # 4

A six membered ring containing one double bond called

Question # 5

Nitroalkane are used in

Question # 6

Alkanes containing carbon C18ownwards are

Question # 7

Preparation of vegetable ghee involves:

Question # 8

Physical properties of alkanes increase with increase of all physical constants except

Question # 9

Th IUPAC name of the compound having formula (CH3) 3 C - CH = CH2 is

Question # 10

During nitration of benzene, the active nitrating agent is

Question # 11

A fuel has the same knocking property as a mixture of 70 isooctane (2, 2, 4- trimethyl pentane) and 30% n-heptane by volume the octane number of the fuel is

Question # 12

Hydrocarbons are organic compounds which contain elements such as

Question # 13

When sodium benzoate is treated with soda lime (NaOH) benzene is formed. What is the other product

Question # 14

When an aqueous solution of potassium salt of monocarboxylic acid is subjected to electrolysis, corresponding alkane is formed. This reation is known as

Question # 15

Which decolourizes the colour of Br3

Question # 16

Alkene general formula :

Question # 17

The method in which alkanes prepared by alkyle halides in the presence of palladium - charcoal is

Question # 18

Kolb's method is not useful for the production of

Question # 19

Mustard gas is a :

Question # 20

Which one does not declourized KMnO4

Question # 21

The simplest and the parent members of aromatic hydrocarbon is

Question # 22

Which of the following reaction is characteristic of benzene

Question # 23

Benzene was discovered by Michael Faraday's in

Question # 24

Which is more active ?

Question # 25

The treatment of benzene with isobutene in the presence of sulphuric acid give

Question # 26

Aromatic hydrocarbons are the derivatives of

Question # 27

Hydrocarbons contain :

Question # 28

Benzene is obtained by fractional distillation of

Question # 29

Reaction of ethanes with KMnO4 gives:

Question # 30

The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Benzene is obtained from benzene sulphonic acid by treating with
A. HCl
B. NaOH
C. H2O
D. NaHCO3
2 Which is the used as test for the presence of alkenes
A. Reaction of cold dilute alkaline KMnO4
B. Combustion
C. Polymerization
D. Catalytic hydrogenation
3 The carbon, carbon bond length in benzene is
A. 1.54A°
B. 1.34A°
C. 1.20A°
D. 1.39A°
4 In which one of the following compound rings are not fused together at ortho positions
A. Phenanthrene
B. Naphthalene
C. Diphenyemethane
D. Anthracene
5 Benzene is not prepared from
A. Acetylene
B. Phenol
C. Benzoic acid
D. Bromo benzene
6 What is not a common use of methane
A. As a fuel
B. For the preparation of haloaklanes
C. For the preparation of methyl alcohol
D. For the preparation of sulphuric acid
7 Cyclohexane can be converted not benzene in the presence of
A. Pt at 100°C
B. Pt at 250°C
C. Pd at room temperature
D. Pt at room temperature
8 The hydrocarbon used for polymerization is
A. Alkanes
B. Alkenes
C. Alkynes
D. All of above
9 The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with
A. Hund's rule
B. Markownikov's rule
C. Pauli's Exclusion principle
D. Auf ban principle
10 Which reaction is too vigorous to control
A. Chlorination
B. Bromination
C. Iodination
D. Fluorination

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