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

00:00
Question # 1

The reaction in which ketone is reduced to the alkane is called

Question # 2

A salt producing hydrocarbon among these compounds is

Question # 3

Odour of alkene is:

Question # 4

CnH2nis the general formula of

Question # 5

Which gas is used for welding purposes

Question # 6

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

Question # 7

Sulphuric acid generates nitronium ion by reacting with

Question # 8

Benzene is not prepared from

Question # 9

Synthesis of rubber is made by polymerization of

Question # 10

Preparation of ethylbenzene by the reaction of bromobenzene, ethylbromide and sodium is called

Question # 11

Alkyne is :

Question # 12

The empirical formula of benzene is determined by

Question # 13

The general formula of alkane is

Question # 14

The sp2hybird orbitals are oriented in space at one angle

Question # 15

Alkynes are colourless & odouless except

Question # 16

Formula of chloroform is:

Question # 17

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 # 18

Benzene is obtained from benzene sulphonic acid by treating with

Question # 19

Preparation of vegetable ghee involves

Question # 20

The saturated hydrocarbons usually end with suffix ______

Question # 21

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

Question # 22

A single benzene ring can have ______ ortho position maximally

Question # 23

The elimination of HX from adjacent carbon atoms is called

Question # 24

Hydrocarbons contain :

Question # 25

Which class of compound is more reactive

Question # 26

Preparation of vegetable ghee involves

Question # 27

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

Question # 28

Toluene is also called

Question # 29

Which one gives acidic reactions?

Question # 30

Nitroalkane are used in

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 acetylene can be converted into-while passing through a Cu-tube at 300°C:
A. Glyoxal
B. Vinyl acetylene
C. Vinyl alcohol
D. Benzene
2 Write the name of following compound
A. 5 - methyle - 2- hexene
B. 2 - methyle hexene
C. 4 - ethyle - 2 - methyle hexene
D. 3 - ethyle - 3 - methyl hexene
3 The elimination of HX from adjacent carbon atoms is called
A. Halogenations
B. Hydrohalogenation
C. Dehydrohalogenation
D. Hydration
4 When an aqueous solution of potassium salt of monocarboxylic acid is subjected to electrolysis, corresponding alkane is formed. This reation is known as
A. Cannizaro reaction
B. Sabatier-secderens reaction
C. Alkylation
D. Kolbe's reaction
5 Ethylene decolorizes cold dilute solution of KMnO4. This test is known as
A. Colouration test
B. Baeyer's test
C. Silver mirror test
D. Ring test
6 Synthesis rubber is made by polymerization :
A. Chloroform
B. Acetylene
C. Divinyl acetylene
D. Butene
7 Hydrocarbons are divided into aliphatic, alicyclic and aromatic which structure among the following show an alicyclic hydrocarbon
8 Introduction of a second methyl group in methylbenzene will give how many isomeric dimethyllenzenes
A. 2
B. 1
C. 3
D. 4
9 The stability of acromatic compounds decreases with ------- in the no. of its resonance structure
A. Decrease
B. Increase
C. Remain constant
D. Partially decreases
10 Most common reactions of benzene and its derivatives are
A. electrophilic addition reactions
B. electrophilic substitution reactions
C. Nucleophilic addition reactions
D. Nucleophilic subtitution reactions

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