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

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

Question # 2

Which of the following possesses the highest melting point?

Question # 3

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

Question # 4

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

Question # 5

The addition of HBr is easiest with

Question # 6

The reaction-method that does not give an alkane is

Question # 7

Mustard gas is a :

Question # 8

The carbon, carbon bond length in benzene is

Question # 9

Which of the following reaction is characteristic of benzene

Question # 10

The elimination of HX from adjacent carbon atoms is called

Question # 11

The order of reactivity of halogen acids towards alkenes

Question # 12

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

Question # 13

Alkynes are colourless & odouless except

Question # 14

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

Question # 15

The next homologue of C10H22will be

Question # 16

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

Question # 17

Paraffins are also called

Question # 18

Alkyl benzenes are readily oxidized by axidfied

Question # 19

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

Question # 20

Alkanes are soluble in all except

Question # 21

Hydrocarbons contain :

Question # 22

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

Question # 23

Preparation of vegetable ghee involves

Question # 24

Aromatic hydrocarbons are the derivatives of

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

All are ortho & Para directing except

Question # 29

CnH2nis the general formula of

Question # 30

Ethylene can be prepared in the laboratory by heating together ethyl alcohol and

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 the unreactivity of alkanes is based upon
A. Inertness of sigma bond
B. Non-polarity of the bonds
C. Both A and B
D. None of above
2 Meta directing group decreased the ----------- of benzene ring
A. Physical activity
B. Chemical reactivity
C. Density
D. None
3 CnH2nis the general formula of
A. Alkanes
B. Alkanes
C. alkynes
D. None of above
4 Vinyl acetylene combines with HCI to form
A. Poly acetylene
B. Benzene
C. Chloroprene
D. Divinylacetylene
5 Which one of the following gases is used for artificial ripening of fruits
A. Ethane
B. Ethyne
C. Methane
D. Propane
6 The geometry of acetylene is
A. Angular
B. Bent
C. Trigonal
D. Linear
7 Alkanes have functional group :
A. ----X
B. --OH
C. ----COH
D. No functional group
8 For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to
A. Hydrolysis
B. Oxidation
C. Hydrogenation
D. Electrolysis
9 The four bonds of carbon in methane are directed towards the corners of
A. Cube
B. Pentagon
C. Hexagon
D. Tetrahedron
10 Replacement of hydrogen by NO2group is called
A. Sulphonatioin
B. Hydration
C. Nitration
D. Cracking

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