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

Benzene does not undergo polymerization and it is also resistant to

Question # 2

The next homologue of C10H22will be

Question # 3

Kolb's method has limited synthetic applications due to

Question # 4

The hydrocarbon used for polymerization is

Question # 5

The reaction-method that does not give an alkane is

Question # 6

Alkene general formula :

Question # 7

Vinyl acetylene combines with HCl to form:

Question # 8

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

Question # 9

the unreactivity of alkanes is based upon

Question # 10

Write the name of following alkene CH2= CH - CH = CH2

Question # 11

Hydrocarbons contain :

Question # 12

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

Question # 13

β-β- dichloroethyle sulphide is commonly known as:

Question # 14

An alkynes having Carbon count of 20 is

Question # 15

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

Question # 16

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

Question # 17

Hydrocarbons are divided into aliphatic, alicyclic and aromatic which structure among the following show an alicyclic hydrocarbon

Question # 18

Most common reactions of benzene and its derivatives are

Question # 19

How many isomeric disubtituted products are obtained by the introducing of second group in the ring

Question # 20

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

Question # 21

CnH2nis the general formula of

Question # 22

The carbon, carbon bond length in benzene is

Question # 23

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

Question # 24

Which one does not declourized KMnO4

Question # 25

Which is symmetric alkene?

Question # 26

The correct order of reactivity of halogens with alkanes is

Question # 27

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

Question # 28

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

Question # 29

When alkyl is treated with chlorine in the presence of sunlight

Question # 30

The sp2hybird orbitals are oriented in space at one angle

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Alkenes combine readily with electrophillic reagents such as halogens giving
A. Haloalkanes
B. Gem-dihalides
C. Vicinal dihalides
D. Vinyl halides
2 Which one of the following gases is used for artificial ripening of fruits
A. Ethane
B. Ethyne
C. Methane
D. Propane
3 Which one of the following is (m-xylene)
A. 1,2 dimethyl benzene
B. 1,3 dimethyl benzene
C. 1,5 dimethyl benzene
D. 1,4 dimethyl benzene
4 The hydrocarbon used for polymerization is
A. Alkanes
B. Alkenes
C. Alkynes
D. All of above
5 Benzene is obtained by fractional distillation of
A. Heavy oil
B. Anthracene oil
C. Middle oil
D. Light oil
6 Which is symmetric alkene?
A. CH=C-CH2
B. CH≡CH
C. CH3-C≡C - CH3
D. B and C
7 The method involved for electrolysis of Na or K salts of carboxylic acids
A. Sabatier's sendrens reaction
B. Kolbe's method
C. Clemmensen
D. Wolf kishner reduction
8 When acetylene is passed through a copper tube at 300°C, it polymerizes to
A. Polyacetylene
B. polyethylene
C. Benzene
D. None of these
9 Alkanes are gases :
A. C1-C4
B. C5-C10
C. C11-C15
D. C10-C20
10 Complete combustion of alkane yields
A. CO2+ H2O
B. CO2+ heat
C. CO + H2O heat
D. CO2+ H2O + heat

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