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

00:00
Question # 1

The term aromatic was derives from

Question # 2

Replacement of hydrogen by NO2group is called

Question # 3

Write the name of following compound

Question # 4

Alkanes containing carbon C18ownwards are

Question # 5

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 # 6

Which compound was recognized the parent member of aromatic compounds

Question # 7

Hydrocarbon which is liquid at room temperature is

Question # 8

Most common reactions of benzene and its derivatives are

Question # 9

Toluene is also called

Question # 10

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

Question # 11

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

Question # 12

Which is liquid among the following alkenes?

Question # 13

CnH2nis the general formula of

Question # 14

Hydrocarbons contain :

Question # 15

Benzene was discovered by Michael Faraday's in

Question # 16

Kolb's method of alkanes production, is actually

Question # 17

Which one does not declourized KMnO4

Question # 18

The general formula of alkane is

Question # 19

Which of the following is not aromatic hydrogencarbon

Question # 20

Which of the following decolorized Br2-water

Question # 21

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

Question # 22

The order of reactivity of halogens in aliphatic substitution reactions is

Question # 23

Ethylene decolorizes cold dilute solution of KMnO4. This test is known as

Question # 24

The hydrocarbon which is used as an illuminating agent

Question # 25

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

Question # 26

Eletronegativity difference in C-C bond in alkanes is:

Question # 27

A salt producing hydrocarbon among these compounds is

Question # 28

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

Question # 29

Hybridization in alkanes is:

Question # 30

All are ortho & Para directing except

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Kolb's method is not useful for the production of
A. Methane
B. Ethane
C. Propane
D. Butane
2 Reaction of ethanes with KMnO4 gives:
A. Ozonide
B. Glyoxal
C. Glycol
D. Oxalic acid
3 Boiling point of n-butane is:
A. -102°C
B. -75°C
C. -55°C
D. 55°C
4 When benzene is burnt in free supply of air, it is completely oxidized to
A. CO
B. CO2+H2O
C. H2CO3
D. None
5 Replacement of hydrogen by NO2group is called
A. Sulphonatioin
B. Hydration
C. Nitration
D. Cracking
6
Question Image
A. 2, 3-dimethylbutane
B. 2, 3-methylbutane
C. 2-dimethylbutane
D. Dimethylbutane
7 Which of the following is not aromatic hydrogencarbon
A. Benzene
B. Naphthalene
C. Toluene
D. Cyclohexene
8 Hydrocarbons are divided into aliphatic, alicyclic and aromatic which structure among the following show an alicyclic hydrocarbon
9 Benzene does not undergo polymerization and it is also resistant to
A. Reduction
B. Oxidation
C. Alkylation
D. Ozonolysis
10 CnH2nis the general formula of
A. Alkanes
B. Alkanes
C. alkynes
D. None of above

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