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 reaction-method that does not give an alkane is

Question # 2

Kolb's method has limited synthetic applications due to

Question # 3

Sp3hybird orbitals are oriented at an angle of

Question # 4

Ethylene combines with water in the presence of H2SO4+ HgSO4and forms

Question # 5

Synthetic rubber is made by polymerization of

Question # 6

Which is liquid among the following alkenes?

Question # 7

Octane number can be changed by

Question # 8

The treatment of benzene with isobutene in the presence of sulphuric acid give

Question # 9

Write the name of following compound

Question # 10

The benzene molecule contains

Question # 11

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

Question # 12

Hydrocarbons are organic compounds which contain elements such as

Question # 13

The geometry of acetylene is

Question # 14

Vinyl acetylene combines with HCl to form:

Question # 15

Alkene general formula :

Question # 16

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 # 17

The process in which orbitals of different energies and shapes mix with each other to give equivalent hybrid orbitals is called

Question # 18

Mustard gas is a :

Question # 19

Hybridization in alkanes is:

Question # 20

Acetylene is used in the manufacture of

Question # 21

In which one of the following compound rings are not fused together at ortho positions

Question # 22

Which of the following is not aromatic hydrogencarbon

Question # 23

The next homologue of C10H22will be

Question # 24

Alkanes are generally not reactive towards acids, alkalis, oxidation or reuducing agents. They however undergo some reactions, which one is the reaction undergone by alkanes

Question # 25

Benzene is prepared from n-hexane in the presence of catalyst

Question # 26

When sodium benzoate is treated with soda lime (NaOH) benzene is formed. What is the other product

Question # 27

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

Question # 28

Alkanes are least reactive towards:

Question # 29

Benzene reacts with ozone and gives

Question # 30

The method used only for the production of symmetrical alkanes

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which one of the following gases is used for artificial ripening of fruits
A. Ethene
B. Ethane
C. Methane
D. Propane
2 Vinyl acetylene combines with HCl to form:
A. Polyacetylene
B. Benzene
C. Chloroprene
D. Divinyl acetylene
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 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
5 Benzene reacts with ozone and gives
A. Glycerin
B. Glyoxal
C. Maleic anhydride
D. Benzoic acid
6 Alkyl halides when reduced with nascent hydrogen in the presence of Zn + HCI, are converted to
A. Alkynes
B. Alkenes
C. Alkanes
D. Alcohol
7 Mustard gas is a :
A. Gas
B. Liquid
C. Solid
D. High boiling point
8 To differentiate isomers we use
A. n-
B. iso-
C. neo
D. All of them
9 Acetylene when treated with 10% H2SO4in the presence of HgSO4adds one molecule of water to form
A. Aldehydes
B. Esters
C. Alcohols
D. Acids
10 In Friedal-Craft's alkylation besides AlCl3 the other reactants are
A. C6H6 + NH3
B. C6H6 + NH4
C. C6H6 + CH3Cl
D. C6H6 + CH3COCl

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