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 is not an electrophitic substitution reaction of benzene

Question # 2

The correct order of reactivity of halogens with alkanes is

Question # 3

Which is symmetric alkene?

Question # 4

Cyclohexane can be converted not benzene in the presence of

Question # 5

C18and onward hydrocarbons are normally

Question # 6

Benzene can be obtained by heating either benzoic acid with X or phenol with Y. X and Y are respectively

Question # 7

Preparation of vegetable ghee involves:

Question # 8

Which of the following decolorized Br2-water

Question # 9

The geometry of acetylene is

Question # 10

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

Question # 11

Nitroalkane are used in

Question # 12

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

Question # 13

Which reaction is too vigorous to control

Question # 14

Synthesis rubber is made by polymerization :

Question # 15

The Total coal resources of Pakistan are estimated to be

Question # 16

Alkynes are colourless & odouless except

Question # 17

Which one of the following is (m-xylene)

Question # 18

β-β- dichloroethyle sulphide is commonly known as:

Question # 19

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

Question # 20

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

Question # 21

Benzene is obtained by fractional distillation of

Question # 22

Which gas is produced by treating CaC2with water

Question # 23

the unreactivity of alkanes is based upon

Question # 24

Which decolourizes the colour of Br3

Question # 25

The hydrocarbon which is used as an illuminating agent

Question # 26

A six membered ring containing one double bond called

Question # 27

Benzene does not undergo

Question # 28

Preparation of vegetable ghee involves

Question # 29

The saturated hydrocarbons usually end with suffix ______

Question # 30

Incomplete oxidation of alkanes yields

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 A fuel has the same knocking property as a mixture of 70 isooctane (2, 2, 4- trimethyl pentane) and 30% n-heptane by volume the octane number of the fuel is
A. 100
B. 70
C. 50
D. 40
2 Ethylene can be prepared in the laboratory by heating together ethyl alcohol and
A. HCI
B. Phenol
C. HF
D. H2SO4
3 Which of the following substances is used as an antiknock compound?
A. Tetraethyl lead
B. Lead tetrachloride
C. Lead acetate
D. Ethyle acetate
4 The electrophile in aromatic sulphonation is
A. H2SO4
B. HSO4
C. SO3
D. SO3+
5 Polymerization of ethane take place at pressure of 100 atm and a temperature of
A. 200°C
B. 400°C
C. 600°C
D. 800°C
6 Incomplete oxidation of alkanes yields
A. CO2& carbon black
B. CO2+ heat
C. CO and carbon black
D. CO + heat
7 The hydrocarbon which is used as an illuminating agent
A. Methane
B. Methene
C. Methyne
D. B & C
8 The treatment of benzene with isobutene in the presence of sulphuric acid give
A. isobutyl benzene
B. tert-Butyl benzene
C. n- Butyl benzene
D. no reaction
9 Complete combustion of alkane yields
A. CO2+ H2O
B. CO2+ heat
C. CO + H2O heat
D. CO2+ H2O + heat
10 The general formula of alkane is
A. CnH2n+2
B. CnHn
C. CnH2n
D. C2H2n-1

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