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

Odour of alkene is:

Question # 2

Which reaction is too vigorous to control

Question # 3

Benzene is obtained by fractional distillation of

Question # 4

Aromatic hydrocarbons are the derivatives of

Question # 5

CnH2nis the general formula of

Question # 6

Which of the following species participate in sulphonation of benzene ring?

Question # 7

Alkenes combine readily with electrophillic reagents such as halogens giving

Question # 8

The carbon, carbon bond length in benzene is

Question # 9

Ethylene combines with water in the presence of H2SO4+ HgSO4and forms

Question # 10

Alkenes normally have ______ geometry

Question # 11

The difference between amount of heat actually released and that of calculated is called

Question # 12

Hydrocarbons contain :

Question # 13

A six membered ring containing one double bond called

Question # 14

B-B'-dichloroethyl sulphide is commonly known as

Question # 15

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

Question # 16

When methane reacts with Cl2in the presence of diffused light the products obtained are

Question # 17

Alkyne is :

Question # 18

Which one of following is not monocyclic aromatic hydrocarbon

Question # 19

When benzene is burnt in free supply of air, it is completely oxidized to

Question # 20

Kolb's method is not useful for the production of

Question # 21

The saturated hydrocarbons usually end with suffix ______

Question # 22

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

Question # 23

The addition of HBr is easiest with

Question # 24

The hydrocarbon used for polymerization is

Question # 25

Amongst the following the compound that can be most readily sulphonated is

Question # 26

Hybridization of each carbon atom in benzene ring is

Question # 27

Which of the following is not an electrophitic substitution reaction of benzene

Question # 28

Replacement of hydrogen by NO2group is called

Question # 29

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

Question # 30

Preparation of vegetable ghee involves

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Kolb's method of alkanes production, is actually
A. Hydrolysis
B. Catalysis
C. Electrolysis
D. Hydrogenation
2 Benzene is obtained by fractional distillation of
A. Heavy oil
B. Anthracene oil
C. Middle oil
D. Light oil
3 An alkane is produced when an alkyle halide reacts with zinc in the presence of
A. HCl
B. CH3COOH
C. Both a & b
D. None
4 Sp3hybird orbitals are oriented at an angle of
A. 107.5°
B. 108.5°
C. 109.5°
D. 103.5°
5 the unreactivity of alkanes is based upon
A. Inertness of sigma bond
B. Non-polarity of the bonds
C. Both A and B
D. None of above
6 An alkynes having Carbon count of 20 is
A. gas
B. liquid
C. Solid
D. None
7 The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with the rule
A. Hund's rule
B. Markowvikov's rule
C. Pauli's exclusion principle
D. Auf ban principle
8 During nitration of benzene, the active nitrating agent is
A. NO3
B. NO2+
C. NO2-
D. HNO3
9 Polymerization of ethane take place at pressure of 100 atm and a temperature of
A. 200°C
B. 400°C
C. 600°C
D. 800°C
10 Zn + HCI are used in
A. Clemenson reduction
B. Wof kishner reduction
C. Kolb's electrolysis
D. Wutruz reaction

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