ECAT Pre Engineering Chemistry Chapter 19 MCQ Test With Answer

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

Alkanes have functional group :

Question # 2

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

Question # 3

An alkynes having Carbon count of 20 is

Question # 4

The difference between amount of heat actually released and that of calculated is called

Question # 5

Marsh gas was the name given to

Question # 6

The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with

Question # 7

When acetylene is passed through a copper tube at 300°C, it polymerizes to

Question # 8

The major reaction occurring in the engines of automobiles is

Question # 9

In CH4, all the H-C-H bond angles are

Question # 10

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

Question # 11

To differentiate isomers we use

Question # 12

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

Question # 13

Which one gives acidic reactions?

Question # 14

Synthetic rubber is made by polymerization of

Question # 15

Sp3hybird orbitals are oriented at an angle of

Question # 16

When alkyl is treated with chlorine in the presence of sunlight

Question # 17

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

Question # 18

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

Question # 19

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 # 20

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

Question # 21

The hydrocarbon which is used as an illuminating agent

Question # 22

Alkanes are generally not reactive towards acids, alkalis, oxidation or reuducing agents. They however undergo some reactions, which one is the reaction undergone by alkanes

Question # 23

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

Question # 24

Complete combustion of alkane yields

Question # 25

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

Question # 26

If we remove one hydrogen atom from an alkane we obtain a group called

Question # 27

A salt producing hydrocarbon among these compounds is

Question # 28

The geometry of acetylene is

Question # 29

Which of the following decolorized Br2-water

Question # 30

Which reaction is too vigorous to control

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Sr.# Question Answer
1 Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?
A. Chlorination, nitration, reducing
B. Nitration, chlorination, reducition
C. Nitration, reduction,chlorination
D. Nitration, reduction, acylation, chlorination, hydrolysis
2 When benzene is burnt in free supply of air, it is completely oxidized to
A. CO
B. CO2+H2O
C. H2CO3
D. None
3 When alkyl is treated with chlorine in the presence of sunlight
A. 1,3 dichloroproduct is formed
B. 1,4 dichloro product is formed
C. 1,3,5 trichloro product is formed
D. Only alkyl group is substituted
4 The empirical formula of benzene is determined by
A. IR spectra
B. U.V
C. Elemental analysis
D. NMR spectra
5 Reaction of ethanes with KMnO4 gives:
A. Ozonide
B. Glyoxal
C. Glycol
D. Oxalic acid
6 Vinyl acetylene combines with HCI to form
A. Poly acetylene
B. Benzene
C. Chloroprene
D. Divinylacetylene
7 Hydrocarbons are divided into aliphatic, alicyclic and aromatic which structure among the following show an alicyclic hydrocarbon
8 Which is symmetric alkene?
A. CH=C-CH2
B. CH≡CH
C. CH3-C≡C - CH3
D. B and C
9 Catalytic oxidation of alkanes is used for the preparation of
A. Adehydes
B. Ketones
C. Fatty acid
D. Carbonyylic acids
10 Marsh gas was the name given to
A. Methane
B. Ethane
C. Propane
D. Butane

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