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

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

Question # 2

Formula of chloroform is:

Question # 3

Formula of chloroform is

Question # 4

The three alternate single and double bonds in the benzene ring are called

Question # 5

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

Question # 6

Which reaction is too vigorous to control

Question # 7

The method used only for the production of symmetrical alkanes

Question # 8

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

Question # 9

Which one of the following is (m-xylene)

Question # 10

The geometry of acetylene is

Question # 11

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

Question # 12

Acetylene is used in the manufacture of

Question # 13

Mustard gas is a

Question # 14

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

Question # 15

Benzene is obtained from benzene sulphonic acid by treating with

Question # 16

Which of the following possesses the highest melting point?

Question # 17

Catalytic oxidation of alkanes is used for the preparation of

Question # 18

The hydrocarbons having double bonds normally end with suffix

Question # 19

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

Question # 20

During nitration of benzene, the active nitrating agent is

Question # 21

Synthetic rubber is made by polymerization of

Question # 22

Benzene reacts with ozone and gives

Question # 23

Hybridization in alkanes is:

Question # 24

The alkynides are used for the ----------- of alkynes

Question # 25

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

Question # 26

the unreactivity of alkanes is based upon

Question # 27

The method involved for electrolysis of Na or K salts of carboxylic acids

Question # 28

An alkane is produced when an alkyle halide reacts with zinc in the presence of

Question # 29

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

Question # 30

Alkenes combine readily with electrophillic reagents such as halogens giving

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Free radical mechanism of halogenation of alkanes follow step:
A. Initiation
B. Propagation
C. Termination
D. All of these
2 When n-hexane is heated in the presence of Pt at 500°C, it cyclists to give
A. Benzene
B. Cyclohexene
C. Benzene
D. Toluene
3 Alkanes containing carbon C18ownwards are
A. Gases
B. Liquids
C. Waxy solids
D. Solids
4 In Friedal-Craft's alkylation besides AlCl3 the other reactants are
A. C6H6 + NH3
B. C6H6 + NH4
C. C6H6 + CH3Cl
D. C6H6 + CH3COCl
5 The order of dehydration of alcohol
A. 10> 20> 30
B. 10> 30> 20
C. 20> 30> 10
D. 30> 20> 10
6 Hybridization of each carbon atom in benzene ring is
A. sp hybridized
B. sp2hybridized
C. sp3
D. dsp2
7 Which one gives acidic reactions?
A. CH3----C≡C-------CH3
B. CH3-----CH2-----HC=CH----CH2
C. CH3----CH=CH2
D. CH3-----C≡CH
8 Formula of chloroform is:
A. CH3Cl
B. CCl4
C. CH2Cl2
D. CHCl3
9 Which of the following is not an electrophitic substitution reaction of benzene
A. Nitration
B. Sulphonation
C. Fridel-Craft alkylation
D. Free radical chlorination of benzene
10 Which of the following is not aromatic hydrogencarbon
A. Benzene
B. Naphthalene
C. Toluene
D. Cyclohexene

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