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 acid can be used as a catalyst in Friedal Craft's reactions

Question # 2

Acetylene gives

Question # 3

When n-hexane is heated in the presence of Pt at 500°C, it cyclists to give

Question # 4

Alkanes are gases :

Question # 5

The geometry of acetylene is

Question # 6

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

Question # 7

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

Question # 8

Alkyl benzenes are readily oxidized by axidfied

Question # 9

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

Question # 10

Benzene is obtained by fractional distillation of

Question # 11

Benzene does not undergo

Question # 12

To differentiate isomers we use

Question # 13

Benzene is not prepared from

Question # 14

De halogenatiion of tetrahalides happens in the presence of active metal like

Question # 15

The correct order of reactivity of halogens with alkanes is

Question # 16

Free radical mechanism of halogenation of alkanes follow step:

Question # 17

The benzene molecule contains

Question # 18

The reaction-method that does not give an alkane is

Question # 19

Kolb's method has limited synthetic applications due to

Question # 20

Cyclohexane can be converted not benzene in the presence of

Question # 21

The addition of HBr is easiest with

Question # 22

The term aromatic was derives from

Question # 23

Catalytic oxidation of alkanes is used for the preparation of

Question # 24

An alkynes having Carbon count of 20 is

Question # 25

Kolb's method of alkanes production, is actually

Question # 26

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

Question # 27

Preparation of vegetable ghee involves

Question # 28

Th IUPAC name of the compound having formula (CH3) 3 C - CH = CH2 is

Question # 29

Which of the following species participate in sulphonation of benzene ring?

Question # 30

Alkanes are least reactive towards:

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 In which one of the following compound rings are not fused together at ortho positions
A. Phenanthrene
B. Naphthalene
C. Diphenyemethane
D. Anthracene
2 During the preparation of alkanes the hydrogenation of alkenes or alkynes the catalyst may be
A. H2SO4
B. Ni
C. Fe2O3
D. Al2O3
3 Formula of chloroform is:
A. CH3Cl
B. CCl4
C. CH2Cl2
D. CHCl3
4 The method in which alkanes prepared by alkyle halides in the presence of palladium - charcoal is
A. Hydrolysis
B. Electrolysis
C. Hydrogenation
D. Hydrogenolysis
5 An alkane is produced when an alkyle halide reacts with zinc in the presence of
A. HCl
B. CH3COOH
C. Both a & b
D. None
6 Sulphuric acid generates nitronium ion by reacting with
A. Nitric acid
B. Nitrogen gas
C. Nitrous acid
D. Potassium nitrate
7 The reaction in which ketone is reduced to the alkane is called
A. Kolb
B. Clemmensen
C. Cannizzaro
D. None
8 The process in which orbitals of different energies and shapes mix with each other to give equivalent hybrid orbitals is called
A. Isomerization
B. polymerization
C. Hybridization
D. Resonance
9 Mustard gas is a :
A. Gas
B. Liquid
C. Solid
D. High boiling point
10 The addition of unsymmetrical reagent to unsymmetrical alkene is in accordance with the rule:
A. Hund's rule
B. Markownikov's rule
C. Pauli's Exclusion Principle
D. Auf bau Principle

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