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 elimination of HX from adjacent carbon atoms is called

Question # 2

Which gas is used for welding purposes

Question # 3

Which decolourizes the colour of Br3

Question # 4

Toluene is also called

Question # 5

Which is the used as test for the presence of alkenes

Question # 6

Preparation of vegetable ghee involves

Question # 7

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

Question # 8

During reaction of O2and alkenes, a product:

Question # 9

Alkenes normally have ______ geometry

Question # 10

Which of the following possesses the highest melting point?

Question # 11

Which of the following reaction is characteristic of benzene

Question # 12

Benzene can be obtained by heating either benzoic acid with X or phenol with Y. X and Y are respectively

Question # 13

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

Question # 14

When alkyl is treated with chlorine in the presence of sunlight

Question # 15

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

Question # 16

The hydrocarbons having double bonds normally end with suffix

Question # 17

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

Question # 18

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

Question # 19

Ethylene decolorizes cold dilute solution of KMnO4. This test is known as

Question # 20

How many isomeric disubtituted products are obtained by the introducing of second group in the ring

Question # 21

Which one of the following gases is used for artificial ripening of fruits

Question # 22

Benzene reacts with ozone and gives

Question # 23

Mustard gas is a :

Question # 24

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 # 25

Synthesis rubber is made by polymerization :

Question # 26

Incomplete oxidation of alkanes yields

Question # 27

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

Question # 28

Synthesis of rubber is made by polymerization of

Question # 29

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

Question # 30

Which compound was recognized the parent member of aromatic compounds

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which compound was recognized the parent member of aromatic compounds
A. Aniline
B. Phenol
C. Benzene
D. Toluene
2 Kolb's method of alkanes production, is actually
A. Hydrolysis
B. Catalysis
C. Electrolysis
D. Hydrogenation
3 Which of the following is an ortho-para directing group
4 Alkanes containing carbon C18ownwards are
A. Gases
B. Liquids
C. Waxy solids
D. Solids
5 Alkanes are gases :
A. C1-C4
B. C5-C10
C. C11-C15
D. C10-C20
6 Which gas is produced by treating CaC2with water
A. Methane
B. Ethane
C. Acetylene
D. HCI
7 The nitration of benzene takes place when it is heated with a mixture of conc.HNO3and conc. H2SO4at 50°C in ratio of
A. 1 : 2
B. 1 : 1
C. 1 : 3
D. 2 : 1
8 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
9 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
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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