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

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

Question # 2

Which of the following reaction is characteristic of benzene

Question # 3

The method used only for the production of symmetrical alkanes

Question # 4

Hydrocarbons are organic compounds which contain elements such as

Question # 5

Formula of chloroform is

Question # 6

Catalytic oxidation of alkanes is used for the preparation of

Question # 7

Kolb's method is not useful for the production of

Question # 8

Benzene is obtained by fractional distillation of

Question # 9

Which one gives acidic reactions?

Question # 10

Preparation of vegetable ghee involves

Question # 11

Which reaction is too vigorous to control

Question # 12

Benzene reacts with ozone and gives

Question # 13

Acetylene gives

Question # 14

Acetylene is used in the manufacture of

Question # 15

Benzene has a -------- structure

Question # 16

Which gas is used for welding purposes

Question # 17

Alkenes normally have ______ geometry

Question # 18

Cyclohexane can be converted not benzene in the presence of

Question # 19

Aromatic hydrocarbons are the derivatives of

Question # 20

Which can be used for dehydration of alcohol

Question # 21

An alkane is produced when an alkyle halide reacts with zinc in the presence of

Question # 22

Sulphuric acid generates nitronium ion by reacting with

Question # 23

During reaction of O2and alkenes, a product:

Question # 24

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

Question # 25

Hydrocarbons are divided into aliphatic, alicyclic and aromatic which structure among the following show an alicyclic hydrocarbon

Question # 26

A salt producing hydrocarbon among these compounds is

Question # 27

Benzene does not undergo

Question # 28

What is not a common use of methane

Question # 29

acetylene can be converted into-while passing through a Cu-tube at 300°C:

Question # 30

Most common reactions of benzene and its derivatives are

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Benzene is obtained by fractional distillation of
A. Heavy oil
B. Anthracene oil
C. Middle oil
D. Light oil
2 Hydrogenation of alkenes/alkynes inthe presence of Ni as catalyst at 3000°C result in the formation of corresponding alkanes. This reaction is known as
A. Sabatier-senderens reaction
B. kolbes reaction
C. Cannizaro's reaction
D. Haloform reaction
3 All C - H bond lengths of benzene ring is
A. 1.07A°
B. 1.09A°
C. 1.08A°
D. None
4 Vinyl acetylene combines with HCI to form
A. Poly acetylene
B. Benzene
C. Chloroprene
D. Divinylacetylene
5 When methane reacts with Cl2in the presence of diffused light the products obtained are?
A. Chloroform only
B. Carbon tetrachloride only
C. Chloromethane and dichloromethane
D. Mixture of a,b,c
6 The electron releasing effect of methyl group is significant and it makes ring a good
A. Electrophilic
B. Nucleophilic
C. Nucleophobic
D. Hydrophobic
7 Benzene has a -------- structure
A. Pentagonal
B. Hexagonal
C. Heptagonal
D. Tetragonal
8 The stability of acromatic compounds decreases with ------- in the no. of its resonance structure
A. Decrease
B. Increase
C. Remain constant
D. Partially decreases
9 Which of the following substances is used as an antiknock compound?
A. Tetraethyl lead
B. Lead tetrachloride
C. Lead acetate
D. Ethyle acetate
10 Synthetic rubber is made by polymerization of
A. Chloroform
B. Acetylene
C. Divinlacetylene
D. Butene

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