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

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

Question # 2

Acetylene gives

Question # 3

C18and onward hydrocarbons are normally

Question # 4

Cyclohexane can be converted not benzene in the presence of

Question # 5

Introduction of a second methyl group in methylbenzene will give how many isomeric dimethyllenzenes

Question # 6

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

Question # 7

In which one of the following compound rings are not fused together at ortho positions

Question # 8

The order of dehydration of alcohol

Question # 9

Which one of the following gases is used for artificial ripening of fruits ?

Question # 10

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 # 11

Hydrocarbons are organic compounds which contain elements such as

Question # 12

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

Question # 13

Which of the following is not an ortho-para directing group

Question # 14

Benzene does not undergo

Question # 15

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

Question # 16

B-B'-dichloroethyl sulphide is commonly known as

Question # 17

Alkanes containing carbon C18ownwards are

Question # 18

Catalytic oxidation of alkanes is used for the preparation of

Question # 19

The elimination of HX from adjacent carbon atoms is called

Question # 20

Alkanes are generally not reactive towards acids, alkalis, oxidation or reuducing agents. They however undergo some reactions, which one is the reaction undergone by alkanes

Question # 21

Benzene reacts with ozone and gives

Question # 22

"Each different compound should have a different name" was published by IUPAC system of nomenclature in

Question # 23

Which is liquid among the following alkenes?

Question # 24

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

Question # 25

Mustard gas is a

Question # 26

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

Question # 27

Which one of the following gases is used for artificial ripening of fruits

Question # 28

Octane number can be changed by

Question # 29

The sp2hybird orbitals are oriented in space at one angle

Question # 30

Incomplete oxidation of alkanes yields

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 The major reaction occurring in the engines of automobiles is
A. Oxidation
B. Reducing
C. Combustion
D. Decomposition
2 Which of the following substances is used as an antiknock compound?
A. Tetraethyl lead
B. Lead tetrachloride
C. Lead acetate
D. Ethyle acetate
3 The three alternate single and double bonds in the benzene ring are called
A. Conjugate bonds
B. Resonating bonds
C. Both A and B
D. None of above
4 Zn + HCI are used in
A. Clemenson reduction
B. Wof kishner reduction
C. Kolb's electrolysis
D. Wutruz reaction
5 Benzene reacts with ozone and gives
A. Glycerin
B. Glyoxal
C. Maleic anhydride
D. Benzoic acid
6 Alkanes are generally not reactive towards acids, alkalis, oxidation or reuducing agents. They however undergo some reactions, which one is the reaction undergone by alkanes
A. Elemination
B. Addition
C. Free radical substitution
D. Nucleophilic substation
7 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
8 Boiling point of n-butane is:
A. -102°C
B. -75°C
C. -55°C
D. 55°C
9 Formula of chloroform is
A. CH3CI
B. CCI4
C. CH2CI2
D. CHCI3
10 All are ortho & Para directing except
A. X
B. OH
C. NR3
D. NH2

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