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

C18and onward hydrocarbons are normally

Question # 2

Mustard gas is a :

Question # 3

Which reaction is too vigorous to control

Question # 4

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

Question # 5

Marsh gas was the name given to

Question # 6

Eletronegativity difference in C-C bond in alkanes is:

Question # 7

All are ortho & Para directing except

Question # 8

The order of reactivity of halogens in aliphatic substitution reactions is

Question # 9

The geometry of acetylene is

Question # 10

The method used only for the production of symmetrical alkanes

Question # 11

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

Question # 12

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

Question # 13

Which decolourizes the colour of Br3

Question # 14

Nitroalkane are used in

Question # 15

Incomplete oxidation of alkanes yields

Question # 16

Which one does not declourized KMnO4

Question # 17

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

Question # 18

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

Question # 19

The three alternate single and double bonds in the benzene ring are called

Question # 20

During reaction of O2and alkenes, a product:

Question # 21

Benzene is not prepared from

Question # 22

Which of the following reaction is characteristic of benzene

Question # 23

Sp3hybird orbitals are oriented at an angle of

Question # 24

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

Question # 25

The compound prepared by a substitution reaction of benzene is

Question # 26

The method involved for electrolysis of Na or K salts of carboxylic acids

Question # 27

A salt producing hydrocarbon among these compounds is

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Synthesis of rubber is made by polymerization of
A. Chloroform
B. Acetylene
C. Divinylacetylene
D. Butene
2 In which one of the following compound rings are not fused together at ortho positions
A. Phenanthrene
B. Naphthalene
C. Diphenyemethane
D. Anthracene
3 Alkynes are colourless & odouless except
A. Acetylene
B. Propyne
C. Butyne
D. Pentyne
4 Meta directing group decreased the ----------- of benzene ring
A. Physical activity
B. Chemical reactivity
C. Density
D. None
5 Benzene was discovered by Michael Faraday's in
A. 1824
B. 1825
C. 1826
D. 1827
6 The stability of acromatic compounds decreases with ------- in the no. of its resonance structure
A. Decrease
B. Increase
C. Remain constant
D. Partially decreases
7 Which of the following substances is used as an antiknock compound?
A. Tetraethyl lead
B. Lead tetrachloride
C. Lead acetate
D. Ethyle acetate
8 An alkynes having Carbon count of 20 is
A. gas
B. liquid
C. Solid
D. None
9 Preparation of ethylbenzene by the reaction of bromobenzene, ethylbromide and sodium is called
A. Wurtz reaction
B. Fitting reaction
C. Wurtz fitting reaction
D. None of these
10 Vinyl acetylene combines with HCl to form:
A. Polyacetylene
B. Benzene
C. Chloroprene
D. Divinyl acetylene

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