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 order of reactivity of halogens in aliphatic substitution reactions is

Question # 2

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

Question # 3

During the preparation of alkynes the active metals that react with tetra halo-alkanes are

Question # 4

Which of the following acid can be used as a catalyst in Friedal Craft's reactions

Question # 5

The reaction-method that does not give an alkane is

Question # 6

Which is liquid among the following alkenes?

Question # 7

For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to

Question # 8

The compound prepared by a substitution reaction of benzene is

Question # 9

The hydrocarbon which is used as an illuminating agent

Question # 10

Alkanes containing carbon C18ownwards are

Question # 11

Substitution of halogen in the benzene ring requires catalyst

Question # 12

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

Question # 13

Acetylene gives

Question # 14

An organic compound, on treatment with Br2 in CC14 gives bromoderivative of an alkene. The compound will be

Question # 15

Synthesis of rubber is made by polymerization of

Question # 16

Synthesis rubber is made by polymerization :

Question # 17

Benzene is not prepared from

Question # 18

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

Question # 19

Hybridization in alkanes is:

Question # 20

A single benzene ring can have ______ ortho position maximally

Question # 21

Which of the following substances is used as an antiknock compound?

Question # 22

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

Question # 23

Which one of following is not monocyclic aromatic hydrocarbon

Question # 24

During the preparation of alkanes the hydrogenation of alkenes or alkynes the catalyst may be

Question # 25

Amongst the following the compound that can be most readily sulphonated is

Question # 26

Cyclohexane can be converted not benzene in the presence of

Question # 27

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

Question # 28

B-B'-dichloroethyl sulphide is commonly known as

Question # 29

When alkyl is treated with chlorine in the presence of sunlight

Question # 30

β-β- dichloroethyle sulphide is commonly known as:

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ECAT Class Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which is liquid among the following alkenes?
A. Ethane
B. Propene
C. Butene
D. Pentene
2
Question Image
A. 4-methyl pentene
B. 2-methyle-1-butene
C. 2-methyl propane
D. None of the above
3 Raney - nickel is the alloy of Ni with
A. Pt
B. Al
C. Cu
D. Pd
4 Which of the following acid can be used as a catalyst in Friedal Craft's reactions
A. AlCl3
B. HNO3
C. BeCl2
D. NaCl
5 Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?
A. Chlorination, nitration, reducing
B. Nitration, chlorination, reducition
C. Nitration, reduction,chlorination
D. Nitration, reduction, acylation, chlorination, hydrolysis
6 Alkanes containing carbon C18ownwards are
A. Gases
B. Liquids
C. Waxy solids
D. Solids
7 Kolb's method is not useful for the production of
A. Methane
B. Ethane
C. Propane
D. Butane
8 When acetylene is passed through a copper tube at 300°C, it polymerizes to
A. Polyacetylene
B. polyethylene
C. Benzene
D. None of these
9 Which decolourizes the colour of Br3
A. CH4
B. CH3-CH3-CH3
C. CH2=CH2
D. CH3-CH3
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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