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

Reaction of ethanes with KMnO4 gives:

Question # 2

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

Question # 3

De halogenatiion of tetrahalides happens in the presence of active metal like

Question # 4

Which one of following is not monocyclic aromatic hydrocarbon

Question # 5

Hydrocarbon which is liquid at room temperature is

Question # 6

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

Question # 7

The order of reactivity of halogen acids towards alkenes

Question # 8

The C-C bond angles in benzene ring are

Question # 9

The method in which alkanes prepared by alkyle halides in the presence of palladium - charcoal is

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

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

Question # 12

Substituted phenyl groups are called

Question # 13

Which one of the following is (m-xylene)

Question # 14

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

Question # 15

Alkanes are soluble in all except

Question # 16

A single benzene ring can have ______ ortho position maximally

Question # 17

Sulphuric acid generates nitronium ion by reacting with

Question # 18

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

Question # 19

Alkyne is :

Question # 20

Hybridization in alkanes is:

Question # 21

β-β- dichloroethyle sulphide is commonly known as:

Question # 22

Odour of alkene is:

Question # 23

Which one does not declourized KMnO4

Question # 24

Meta directing group decreased the ----------- of benzene ring

Question # 25

Which class of compound is more reactive

Question # 26

The saturated hydrocarbons usually end with suffix ______

Question # 27

If we remove one hydrogen atom from an alkane we obtain a group called

Question # 28

Preparation of vegetable ghee involves

Question # 29

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

Question # 30

Alkanes containing carbon C18ownwards are

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 When methane reacts with Cl2in the presence of diffused light the products obtained are?
A. Chloroform only
B. Carbon tetrachloride only
C. Chloromethane and dichloromethane
D. Mixture of a,b,c
2 Ethylene polymerizes at 100 atm pressure and 400°C to give
A. Polybenzene
B. Polyalcohol
C. Polypropylene
D. Polyethylene
3 Alkyl halides when reduced with nascent hydrogen in the presence of Zn + HCI, are converted to
A. Alkynes
B. Alkenes
C. Alkanes
D. Alcohol
4 Eletronegativity difference in C-C bond in alkanes is:
A. Zero
B. Double
C. Half
D. 4.0
5 Which reaction is too vigorous to control
A. Chlorination
B. Bromination
C. Iodination
D. Fluorination
6 Synthesis of rubber is made by polymerization of
A. Chloroform
B. Acetylene
C. Divinylacetylene
D. Butene
7 The reaction in which ketone is reduced to the alkane is called
A. Kolb
B. Clemmensen
C. Cannizzaro
D. None
8 Alkynes are colourless & odouless except
A. Acetylene
B. Propyne
C. Butyne
D. Pentyne
9 Alkyne is :
A. CH3-CH3
B. CH4
C. CH2=CH2
D. C2H2
10 The four bonds of carbon in methane are directed towards the corners of
A. Cube
B. Pentagon
C. Hexagon
D. Tetrahedron

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