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

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

Question # 2

In Friedal-Craft's alkylation besides AlCl3 the other reactants are

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

When acetylene is passed through a copper tube at 300°C, it polymerizes to

Question # 7

Which can be used for dehydration of alcohol

Question # 8

Which of the following possesses the highest melting point?

Question # 9

Hybridization of each carbon atom in benzene ring is

Question # 10

Which is the used as test for the presence of alkenes

Question # 11

The benzene molecule contains

Question # 12

A single benzene ring can have ______ ortho position maximally

Question # 13

Raney - nickel is the alloy of Ni with

Question # 14

The order of dehydration of alcohol

Question # 15

Benzene does not undergo

Question # 16

Benzene is obtained from benzene sulphonic acid by treating with

Question # 17

The order of reactivity of halogens in aliphatic substitution reactions is

Question # 18

Boiling point of n-butane is:

Question # 19

Which gas is produced by treating CaC2with water

Question # 20

Sulphuric acid generates nitronium ion by reacting with

Question # 21

β-β- dichloroethyle sulphide is commonly known as:

Question # 22

Ethylene can be prepared in the laboratory by heating together ethyl alcohol and

Question # 23

The term aromatic was derives from

Question # 24

The method used only for the production of symmetrical alkanes

Question # 25

Alkanes are soluble in all except

Question # 26

Catalytic oxidation of alkanes is used for the preparation of

Question # 27

The next homologue of C10H22will be

Question # 28

The stability of acromatic compounds decreases with ------- in the no. of its resonance structure

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 The geometry of acetylene is
A. Angular
B. Bent
C. Trigonal
D. Linear
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 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
4 Benzene is prepared from n-hexane in the presence of catalyst
A. Cr2O3
B. Al2O3
C. SiO2
D. All above
5 Hybridization of each carbon atom in benzene ring is
A. sp hybridized
B. sp2hybridized
C. sp3
D. dsp2
6 Which compound was recognized the parent member of aromatic compounds
A. Aniline
B. Phenol
C. Benzene
D. Toluene
7 Which one of following is not monocyclic aromatic hydrocarbon
A. Benzaldehyde
B. Benzoic acid
C. Benzene sulfonic acid
D. Biphenyl
8 Nitroalkane are used in
A. Fuel
B. Solvents
C. Organic synthesis
D. All of them
9 Preparation of vegetable ghee involves
A. Halogenations
B. Hydrogenations
C. Hydroxylation
D. Dehydrogenations
10 The stability of acromatic compounds decreases with ------- in the no. of its resonance structure
A. Decrease
B. Increase
C. Remain constant
D. Partially decreases

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