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 geometry of acetylene is

Question # 2

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

Question # 3

Benzene is prepared from n-hexane in the presence of catalyst

Question # 4

All C - H bond lengths of benzene ring is

Question # 5

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

Question # 6

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 # 7

Substitution of halogen in the benzene ring requires catalyst

Question # 8

Aromatic hydrocarbons are the derivatives of

Question # 9

Hybridization of each carbon atom in benzene ring is

Question # 10

Which one does not declourized KMnO4

Question # 11

Benzene does not undergo polymerization and it is also resistant to

Question # 12

Complete combustion of alkane yields

Question # 13

Preparation of vegetable ghee involves

Question # 14

The difference between amount of heat actually released and that of calculated is called

Question # 15

The carbon, carbon bond length in benzene is

Question # 16

The major reaction occurring in the engines of automobiles is

Question # 17

Which is liquid among the following alkenes?

Question # 18

Octane number is zero for

Question # 19

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

Question # 20

Preparation of vegetable ghee involves:

Question # 21

When an aqueous solution of potassium salt of monocarboxylic acid is subjected to electrolysis, corresponding alkane is formed. This reation is known as

Question # 22

Which is the used as test for the presence of alkenes

Question # 23

Ethylene polymerizes at 100 atm pressure and 400°C to give

Question # 24

C18and onward hydrocarbons are normally

Question # 25

The C-C bond angles in benzene ring are

Question # 26

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

Question # 27

Which gas is used for welding purposes

Question # 28

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

Question # 29

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

Question # 30

Benzene is not prepared from

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 The addition of HBr is easiest with
A. CH2 = CHCl
B. CICH = CHCl
C. CH3 - CH = CH2
D. (CH3)2 C = CH2
2 The hydrocarbons having double bonds normally end with suffix
A. Ane
B. Ene
C. Yne
D. Oic
3 Benzene reacts with ozone and gives
A. Glycerin
B. Glyoxal
C. Maleic anhydride
D. Benzoic acid
4 The hydrocarbon which is used as an illuminating agent
A. Methane
B. Methene
C. Methyne
D. B & C
5 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
6 Mustard gas is a :
A. Gas
B. Liquid
C. Solid
D. High boiling point
7 acetylene can be converted into-while passing through a Cu-tube at 300°C:
A. Glyoxal
B. Vinyl acetylene
C. Vinyl alcohol
D. Benzene
8 Aromatic hydrocarbons are the derivatives of
A. Normal series of paraffins
B. Alkene
C. Benzene
D. Cyclohexane
9 The four bonds of carbon in methane are directed towards the corners of
A. Cube
B. Pentagon
C. Hexagon
D. Tetrahedron
10 Vinyl acetylene combines with HCI to form
A. Poly acetylene
B. Benzene
C. Chloroprene
D. Divinylacetylene

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