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 general formula of alkane is

Question # 2

Most common reactions of benzene and its derivatives are

Question # 3

The hydrocarbon which is used as an illuminating agent

Question # 4

The elimination of HX from adjacent carbon atoms is called

Question # 5

The hydrocarbons having double bonds normally end with suffix

Question # 6

Hydrocarbons are organic compounds which contain elements such as

Question # 7

Nitroalkane are used in

Question # 8

Write the name of following compound

Question # 9

Benzene is not prepared from

Question # 10

The alkynides are used for the ----------- of alkynes

Question # 11

All C - H bond lengths of benzene ring is

Question # 12

Which one gives acidic reactions?

Question # 13

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 # 14

Hybridization in alkanes is:

Question # 15

Alkanes are soluble in all except

Question # 16

When an aqueous solution of potassium salt of monocarboxylic acid is subjected to electrolysis, corresponding alkane is formed. This reation is known as

Question # 17

Which one of the following is (m-xylene)

Question # 18

Which class of compound is more reactive

Question # 19

Acetylene is used in the manufacture of

Question # 20

Hydrocarbons contain :

Question # 21

Eletronegativity difference in C-C bond in alkanes is:

Question # 22

Boiling point of n-butane is:

Question # 23

β-β- dichloroethyle sulphide is commonly known as:

Question # 24

Kolb's method has limited synthetic applications due to

Question # 25

Sp3hybird orbitals are oriented at an angle of

Question # 26

When sodium benzoate is treated with soda lime (NaOH) benzene is formed. What is the other product

Question # 27

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

Question # 28

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

Question # 29

The stability of acromatic compounds decreases with ------- in the no. of its resonance structure

Question # 30

Alkanes containing carbon C18ownwards are

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which is liquid among the following alkenes?
A. Ethane
B. Propene
C. Butene
D. Pentene
2 Alkyne is :
A. CH3-CH3
B. CH4
C. CH2=CH2
D. C2H2
3 Which one does not declourized KMnO4
A. Alkenes
B. Alkynes
C. Bezene
D. All above
4 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
5 The electron releasing effect of methyl group is significant and it makes ring a good
A. Electrophilic
B. Nucleophilic
C. Nucleophobic
D. Hydrophobic
6 The hydrocarbon used for polymerization is
A. Alkanes
B. Alkenes
C. Alkynes
D. All of above
7 Which one of the following gases is used for artificial ripening of fruits
A. Ethane
B. Ethyne
C. Methane
D. Propane
8 An alkynes having Carbon count of 20 is
A. gas
B. liquid
C. Solid
D. None
9 Which gas is used for welding purposes
A. Butane
B. Nitrogen
C. Methane
D. Acetylene
10 Octane number is zero for
A. n-Heptane
B. Isooctane
C. n-Hexane
D. Isoheptane

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