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

A salt producing hydrocarbon among these compounds is

Question # 2

The simplest and the parent members of aromatic hydrocarbon is

Question # 3

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

Question # 4

The presence of a double bond in a compound is the sign of

Question # 5

During reaction of O2and alkenes, a product:

Question # 6

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

Question # 7

Preparation of ethylbenzene by the reaction of bromobenzene, ethylbromide and sodium is called

Question # 8

Alkyne is :

Question # 9

The order of dehydration of alcohol

Question # 10

Octane number is zero for

Question # 11

Most common reactions of benzene and its derivatives are

Question # 12

Free radical mechanism of halogenation of alkanes follow step:

Question # 13

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

Question # 14

Ethylene can be prepared in the laboratory by heating together ethyl alcohol and

Question # 15

Which class of compound is more reactive

Question # 16

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

Question # 17

The electron releasing effect of methyl group is significant and it makes ring a good

Question # 18

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

Question # 19

The hydrocarbon which is used as an illuminating agent

Question # 20

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

Question # 21

Alkenes normally have ______ geometry

Question # 22

Aromatic hydrocarbons are the derivatives of

Question # 23

Which gas is used for welding purposes

Question # 24

Which is more active ?

Question # 25

Paraffins are also called

Question # 26

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

Question # 27

The temp. used for the hydrogenation of alkenes using Ni is

Question # 28

The geometry of acetylene is

Question # 29

Complete combustion of alkane yields

Question # 30

The reaction in which ketone is reduced to the alkane is called

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 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
2 Which is symmetric alkene?
A. CH=C-CH2
B. CH≡CH
C. CH3-C≡C - CH3
D. B and C
3 Introduction of a second methyl group in methylbenzene will give how many isomeric dimethyllenzenes
A. 2
B. 1
C. 3
D. 4
4 Marsh gas was the name given to
A. Methane
B. Ethane
C. Propane
D. Butane
5 Alkanes containing carbon C18ownwards are
A. Gases
B. Liquids
C. Waxy solids
D. Solids
6 The reaction in which ketone is reduced to the alkane is called
A. Kolb
B. Clemmensen
C. Cannizzaro
D. None
7 Toluene is also called
A. Hydroxyl benzene
B. Methyl benzene
C. ethyl benzene
D. None
8 Hydrocarbon which is liquid at room temperature is
A. Pentane
B. Butane
C. Propane
D. Ethane
9 Acetylene gives
A. White ppt. with ammonical AgNO3 and red ppt. with ammonical Cu(NO3)2
B. White ppt. with ammonical AgNO3 and red ppt. with ammonical Cu2C12
C. White ppt. with both
D. Red ppt. with both
10 Kolb's method has limited synthetic applications due to
A. Expensive catalysis
B. Slow reaction
C. Number of side products produced
D. Salts used are very expensive

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