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

Preparation of vegetable ghee involves

Question # 2

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

Question # 3

acetylene can be converted into-while passing through a Cu-tube at 300°C:

Question # 4

Cyclohexane can be converted not benzene in the presence of

Question # 5

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

Question # 6

Which class of compound is more reactive

Question # 7

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

Question # 8

C18and onward hydrocarbons are normally

Question # 9

Reaction of ethanes with KMnO4 gives:

Question # 10

The benzene molecule contains

Question # 11

When an aqueous solution of potassium salt of monocarboxylic acid is subjected to electrolysis, corresponding alkane is formed. This reation is known as

Question # 12

When benzene is burnt in free supply of air, it is completely oxidized to

Question # 13

The term aromatic was derives from

Question # 14

Which compound was recognized the parent member of aromatic compounds

Question # 15

Introduction of a second methyl group in methylbenzene will give how many isomeric dimethyllenzenes

Question # 16

The order of reactivity of halogen acids towards alkenes

Question # 17

Alkyl halides when reduced with nascent hydrogen in the presence of Zn + HCI, are converted to

Question # 18

All are ortho & Para directing except

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

Toluene is also called

Question # 21

Which gas is produced by treating CaC2with water

Question # 22

Ethylene polymerizes at 100 atm pressure and 400°C to give

Question # 23

Vinyl acetylene combines with HCl to form:

Question # 24

B-B'-dichloroethyl sulphide is commonly known as

Question # 25

Alkenes combine readily with electrophillic reagents such as halogens giving

Question # 26

Alkanes containing carbon C18ownwards are

Question # 27

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

Question # 28

The correct order of reactivity of halogens with alkanes is

Question # 29

The hydrocarbon used for polymerization is

Question # 30

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

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 All C - H bond lengths of benzene ring is
A. 1.07A°
B. 1.09A°
C. 1.08A°
D. None
2 Complete combustion of alkane yields
A. CO2+ H2O
B. CO2+ heat
C. CO + H2O heat
D. CO2+ H2O + heat
3 Th IUPAC name of the compound having formula (CH3) 3 C - CH = CH2 is
A. 1, 1-Dimethyl-3-butene
B. 1,1,1-Trimethyl-3-propene
C. 3,3,-Dimenthyl-1-butene
D. 3,3,3,-Trimethyl-1-propene
4 During the preparation of alkynes the active metals that react with tetra halo-alkanes are
A. Zn
B. Mg
C. Both a and b
D. None
5 The four bonds of carbon in methane are directed towards the corners of
A. Cube
B. Pentagon
C. Hexagon
D. Tetrahedron
6 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
7 Which is more active ?
A. Alkanes
B. Alkenes
C. Alkynes
D. Benzene
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 The geometry of acetylene is
A. Angular
B. Bent
C. Trigonal
D. Linear
10 Which of the following method is most appropriate for the manufacture of methane?
A. By reduction of CH2CL2
B. Wurtz reaction
C. Liquification of natural gas
D. None of these

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