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 sp2hybird orbitals are oriented in space at one angle

Question # 2

Alkanes are soluble in all except

Question # 3

The presence of a double bond in a compound in the sign of:

Question # 4

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

Question # 5

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

Question # 6

Which of the following is an ortho-para directing group

Question # 7

Which one gives acidic reactions?

Question # 8

Alkyl benzenes are readily oxidized by axidfied

Question # 9

A single benzene ring can have ______ ortho position maximally

Question # 10

The nitration of benzene takes place when it is heated with a mixture of conc.HNO3and conc. H2SO4at 50°C in ratio of

Question # 11

Substituted phenyl groups are called

Question # 12

Benzene is obtained from benzene sulphonic acid by treating with

Question # 13

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

Question # 14

In Friedal-Craft's alkylation besides AlCl3 the other reactants are

Question # 15

The correct order of reactivity of halogens with alkanes is

Question # 16

Kolb's method is not useful for the production of

Question # 17

Which of the following is not aromatic hydrogencarbon

Question # 18

Acetylene is used in the manufacture of

Question # 19

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

Question # 20

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

Question # 21

The presence of a double bond in a compound is the sign of

Question # 22

The carbon, carbon bond length in benzene is

Question # 23

B-B'-dichloroethyl sulphide is commonly known as

Question # 24

The general formula of alkane is

Question # 25

Formula of chloroform is:

Question # 26

When acetylene is passed through a copper tube at 300°C, it polymerizes to

Question # 27

Which one does not declourized KMnO4

Question # 28

The order of dehydration of alcohol

Question # 29

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

Question # 30

Hybridization in alkanes is:

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 The simplest and the parent members of aromatic hydrocarbon is
A. Benzene
B. Toluene
C. Biphenyis
D. Naphthalene
2 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
3 Which one of the following is (m-xylene)
A. 1,2 dimethyl benzene
B. 1,3 dimethyl benzene
C. 1,5 dimethyl benzene
D. 1,4 dimethyl benzene
4 Incomplete oxidation of alkanes yields
A. CO2& carbon black
B. CO2+ heat
C. CO and carbon black
D. CO + heat
5 Which is more active ?
A. Alkanes
B. Alkenes
C. Alkynes
D. Benzene
6 Ethylene can be prepared in the laboratory by heating together ethyl alcohol and
A. HCI
B. Phenol
C. HF
D. H2SO4
7 Toluene is also called
A. Hydroxyl benzene
B. Methyl benzene
C. ethyl benzene
D. None
8 Alkanes have functional group :
A. ----X
B. --OH
C. ----COH
D. No functional group
9 Benzene was discovered by Michael Faraday's in
A. 1824
B. 1825
C. 1826
D. 1827
10 The reaction in which ketone is reduced to the alkane is called
A. Kolb
B. Clemmensen
C. Cannizzaro
D. None

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