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 is liquid among the following alkenes?

Question # 2

Which of the following substances is used as an antiknock compound?

Question # 3

Vinyl acetylene combines with HCI to form

Question # 4

Nitroalkane are used in

Question # 5

Benzene does not undergo

Question # 6

The saturated hydrocarbons usually end with suffix ______

Question # 7

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

Question # 8

Which one of following is not monocyclic aromatic hydrocarbon

Question # 9

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

Question # 10

To differentiate isomers we use

Question # 11

B-B'-dichloroethyl sulphide is commonly known as

Question # 12

Hydrocarbon which is liquid at room temperature is

Question # 13

β-β- dichloroethyle sulphide is commonly known as:

Question # 14

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

Question # 15

Preparation of vegetable ghee involves:

Question # 16

Which is more active ?

Question # 17

Octane number can be changed by

Question # 18

The order of reactivity of halogen acids towards alkenes

Question # 19

The hydrocarbon used for polymerization is

Question # 20

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 # 21

In which one of the following compound rings are not fused together at ortho positions

Question # 22

the unreactivity of alkanes is based upon

Question # 23

What is not a common use of methane

Question # 24

Aromatic hydrocarbons are the derivatives of

Question # 25

Which can be used for dehydration of alcohol

Question # 26

Alkanes are soluble in all except

Question # 27

De halogenatiion of tetrahalides happens in the presence of active metal like

Question # 28

The next homologue of C10H22will be

Question # 29

"Each different compound should have a different name" was published by IUPAC system of nomenclature in

Question # 30

The reaction-method that does not give an alkane is

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 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
2 Which of the following decolorized Br2-water
A. Methane
B. Ethane
C. Ethene
D. Propane
3 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
4 The carbon, carbon bond length in benzene is
A. 1.54A°
B. 1.34A°
C. 1.20A°
D. 1.39A°
5 Alkanes are soluble in all except
A. Benzene
B. Ether
C. Water
D. Carbon tetra chloride
6 De halogenatiion of tetrahalides happens in the presence of active metal like
A. Zn
B. Mg
C. Both a and b
D. None of them
7 Benzene is obtained by fractional distillation of
A. Heavy oil
B. Anthracene oil
C. Middle oil
D. Light oil
8 Which is symmetric alkene?
A. CH=C-CH2
B. CH≡CH
C. CH3-C≡C - CH3
D. B and C
9 When methane reacts with Cl2in the presence of diffused light the products obtained are
A. Chloroform only
B. Carbon tetrachloride only
C. Chloromethane and dichloromethane
D. Mixture of a, b, c
10 Alkenes combine readily with electrophillic reagents such as halogens giving
A. Haloalkanes
B. Gem-dihalides
C. Vicinal dihalides
D. Vinyl halides

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