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

Hydrocarbons are organic compounds which contain elements such as

Question # 2

The major reaction occurring in the engines of automobiles is

Question # 3

Which of the following method is most appropriate for the manufacture of methane?

Question # 4

Vinyl acetylene combines with HCl to form:

Question # 5

Alkenes normally have ______ geometry

Question # 6

During the preparation of alkanes the hydrogenation of alkenes or alkynes the catalyst may be

Question # 7

Preparation of vegetable ghee involves:

Question # 8

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

Question # 9

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

Question # 10

Physical properties of alkanes increase with increase of all physical constants except

Question # 11

C18and onward hydrocarbons are normally

Question # 12

Aromatic hydrocarbons are the derivatives of

Question # 13

Ethylene decolorizes cold dilute solution of KMnO4. This test is known as

Question # 14

To differentiate isomers we use

Question # 15

The reaction in which ketone is reduced to the alkane is called

Question # 16

For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to

Question # 17

Which one of the following is (m-xylene)

Question # 18

The electrophile in aromatic sulphonation is

Question # 19

Benzene is obtained from benzene sulphonic acid by treating with

Question # 20

β-β- dichloroethyle sulphide is commonly known as:

Question # 21

The Total coal resources of Pakistan are estimated to be

Question # 22

Alkanes are least reactive towards:

Question # 23

Boiling point of n-butane is:

Question # 24

Amongst the following the compound that can be most readily sulphonated is

Question # 25

Write the name of following compound

Question # 26

An organic compound, on treatment with Br2 in CC14 gives bromoderivative of an alkene. The compound will be

Question # 27

Raney - nickel is the alloy of Ni with

Question # 28

The hydrocarbon used for polymerization is

Question # 29

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 # 30

Odour of alkene is:

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Benzene does not undergo polymerization and it is also resistant to
A. Reduction
B. Oxidation
C. Alkylation
D. Ozonolysis
2 The difference between amount of heat actually released and that of calculated is called
A. Bonding energy
B. Activation energy
C. Resonance energy
D. Transition energy
3 The four bonds of carbon in methane are directed towards the corners of
A. Cube
B. Pentagon
C. Hexagon
D. Tetrahedron
4 B-B'-dichloroethyl sulphide is commonly known as
A. Mustard gas
B. Laughing gas
C. Phosgene gas
D. Bio gas
5 Alkyl halides when reduced with nascent hydrogen in the presence of Zn + HCI, are converted to
A. Alkynes
B. Alkenes
C. Alkanes
D. Alcohol
6 The benzene molecule contains
A. Three double bonds
B. Two double bonds
C. One double bonds
D. Delocalizedπ-electron charge
7 Mustard gas is a :
A. Gas
B. Liquid
C. Solid
D. High boiling point
8 A six membered ring containing one double bond called
A. Cyclohexene
B. Cyclohexane
C. Cyclohexadiene
D. None
9 An alkynes having Carbon count of 20 is
A. gas
B. liquid
C. Solid
D. None
10 The term aromatic was derives from
A. Greek word
B. Latin
C. Russian
D. English

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