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

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

Question # 2

Synthesis of rubber is made by polymerization of

Question # 3

Which one of following is not monocyclic aromatic hydrocarbon

Question # 4

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 # 5

Which of the following is not an electrophitic substitution reaction of benzene

Question # 6

Synthetic rubber is made by polymerization of

Question # 7

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

Question # 8

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

Question # 9

The method used only for the production of symmetrical alkanes

Question # 10

Kolb's method has limited synthetic applications due to

Question # 11

Alkanes are least reactive towards:

Question # 12

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

Question # 13

The nitration of benzene takes place when it is heated with a mixture of conc.HNO3and conc. H2SO4at 50°C in ratio of

Question # 14

During nitration of benzene, the active nitrating agent is

Question # 15

Hydrocarbon which is liquid at room temperature is

Question # 16

Sp3hybird orbitals are oriented at an angle of

Question # 17

The correct order of reactivity of halogens with alkanes is

Question # 18

Substituted phenyl groups are called

Question # 19

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

Question # 20

Alkanes are gases :

Question # 21

Most common reactions of benzene and its derivatives are

Question # 22

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

Question # 23

Vinyl acetylene combines with HCI to form

Question # 24

Which of the following is an ortho-para directing group

Question # 25

Which is liquid among the following alkenes?

Question # 26

Replacement of hydrogen by NO2group is called

Question # 27

Which of the following possesses the highest melting point?

Question # 28

Benzene reacts with ozone and gives

Question # 29

The hydrocarbon used for polymerization is

Question # 30

Odour of alkene is:

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 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
2 Formula of chloroform is:
A. CH3Cl
B. CCl4
C. CH2Cl2
D. CHCl3
3 Nitroalkane are used in
A. Fuel
B. Solvents
C. Organic synthesis
D. All of them
4 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
A. Elemination
B. Addition
C. Free radical substitution
D. Nucleophilic substation
5 β-β- dichloroethyle sulphide is commonly known as:
A. Mustared gas
B. Laughing gas
C. Phosgene gas
D. Bio gas
6 Benzene was discovered by Michael Faraday's in
A. 1824
B. 1825
C. 1826
D. 1827
7 Which of the following is not aromatic hydrogencarbon
A. Benzene
B. Naphthalene
C. Toluene
D. Cyclohexene
8 Marsh gas was the name given to
A. Methane
B. Ethane
C. Propane
D. Butane
9 The method used only for the production of symmetrical alkanes
A. Kolb's method
B. Clemmenen
C. Cannizzaro
D. Wolf kishner
10 Which is the used as test for the presence of alkenes
A. Reaction of cold dilute alkaline KMnO4
B. Combustion
C. Polymerization
D. Catalytic hydrogenation

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