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

Synthetic rubber is made by polymerization of

Question # 2

"Each different compound should have a different name" was published by IUPAC system of nomenclature in

Question # 3

Hydrocarbons contain :

Question # 4

Acetylene gives

Question # 5

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

Question # 6

the unreactivity of alkanes is based upon

Question # 7

All are ortho & Para directing except

Question # 8

A single benzene ring can have ______ ortho position maximally

Question # 9

The correct order of reactivity of halogens with alkanes is

Question # 10

Alkynes are colourless & odouless except

Question # 11

Which reaction is too vigorous to control

Question # 12

Alkanes are soluble in all except

Question # 13

The simplest and the parent members of aromatic hydrocarbon is

Question # 14

Which one gives acidic reactions?

Question # 15

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

Question # 16

Incomplete oxidation of alkanes yields

Question # 17

Marsh gas was the name given to

Question # 18

Which of the following decolorized Br2-water

Question # 19

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

Question # 20

Benzene does not undergo polymerization and it is also resistant to

Question # 21

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

Question # 22

Acetylene is used in the manufacture of

Question # 23

Which class of compound is more reactive

Question # 24

Odour of alkene is:

Question # 25

Alkenes normally have ______ geometry

Question # 26

Sulphuric acid generates nitronium ion by reacting with

Question # 27

The geometry of acetylene is

Question # 28

The elimination of HX from adjacent carbon atoms is called

Question # 29

Octane number can be changed by

Question # 30

Write the name of following compound

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Alkanes have functional group :
A. ----X
B. --OH
C. ----COH
D. No functional group
2 Benzene does not undergo
A. Substitution reaction
B. Addition reaction
C. Oxidation reaction
D. Elimination reaction
3 The alkynides are used for the ----------- of alkynes
A. Pxperation
B. Purification
C. Seperation
D. All of above
4 Which of the following is an ortho-para directing group
5 Replacement of hydrogen by NO2group is called
A. Sulphonatioin
B. Hydration
C. Nitration
D. Cracking
6 If we remove one hydrogen atom from an alkane we obtain a group called
A. Acetyle group
B. Formyle group
C. Alkyle group
D. Ketyle group
7 What is not a common use of methane
A. As a fuel
B. For the preparation of haloaklanes
C. For the preparation of methyl alcohol
D. For the preparation of sulphuric acid
8 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
9 Eletronegativity difference in C-C bond in alkanes is:
A. Zero
B. Double
C. Half
D. 4.0
10 Which is liquid among the following alkenes?
A. Ethane
B. Propene
C. Butene
D. Pentene

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