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

Th IUPAC name of the compound having formula (CH3) 3 C - CH = CH2 is

Question # 2

The temp. used for the hydrogenation of alkenes using Ni is

Question # 3

When alkyl is treated with chlorine in the presence of sunlight

Question # 4

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

Question # 5

Which is the used as test for the presence of alkenes

Question # 6

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

Question # 7

The electron releasing effect of methyl group is significant and it makes ring a good

Question # 8

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

Question # 9

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 # 10

Synthetic rubber is made by polymerization of

Question # 11

The term aromatic was derives from

Question # 12

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

Question # 13

Which of the following reaction is characteristic of benzene

Question # 14

When benzene is burnt in free supply of air, it is completely oxidized to

Question # 15

Replacement of hydrogen by NO2group is called

Question # 16

Alkyl benzenes are readily oxidized by axidfied

Question # 17

Catalytic oxidation of alkanes is used for the preparation of

Question # 18

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

Question # 19

How many molecules of chlorine adds in benzene in the presence of sunlight

Question # 20

Benzene is obtained from benzene sulphonic acid by treating with

Question # 21

Alkanes containing carbon C18ownwards are

Question # 22

Odour of alkene is:

Question # 23

The sp2hybird orbitals are oriented in space at one angle

Question # 24

CnH2nis the general formula of

Question # 25

The hydrocarbons having double bonds normally end with suffix

Question # 26

A six membered ring containing one double bond called

Question # 27

The next homologue of C10H22will be

Question # 28

The major reaction occurring in the engines of automobiles is

Question # 29

Vinyl acetylene combines with HCI to form

Question # 30

The C-C bond angles in benzene ring are

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 The carbon, carbon bond length in benzene is
A. 1.54A°
B. 1.34A°
C. 1.20A°
D. 1.39A°
2 The method used only for the production of symmetrical alkanes
A. Kolb's method
B. Clemmenen
C. Cannizzaro
D. Wolf kishner
3 Introduction of a second methyl group in methylbenzene will give how many isomeric dimethyllenzenes
A. 2
B. 1
C. 3
D. 4
4 Marsh gas was the name given to
A. Methane
B. Ethane
C. Propane
D. Butane
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 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
7 Alkyl benzenes are readily oxidized by axidfied
A. KMnO4
B. K2CO3
C. MnO4
D. H2SO4
8 The addition of HBr is easiest with
A. CH2 = CHCl
B. CICH = CHCl
C. CH3 - CH = CH2
D. (CH3)2 C = CH2
9 Hydrogenation of alkenes/alkynes inthe presence of Ni as catalyst at 3000°C result in the formation of corresponding alkanes. This reaction is known as
A. Sabatier-senderens reaction
B. kolbes reaction
C. Cannizaro's reaction
D. Haloform reaction
10 Reaction of ethanes with KMnO4 gives:
A. Ozonide
B. Glyoxal
C. Glycol
D. Oxalic acid

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