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 unreactivity of alkanes is based upon

Question # 2

Alkene general formula :

Question # 3

A single benzene ring can have ______ ortho position maximally

Question # 4

Which of the following method is most appropriate for the manufacture of methane?

Question # 5

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

Question # 6

The hydrocarbon which is used as an illuminating agent

Question # 7

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

Question # 8

The process in which orbitals of different energies and shapes mix with each other to give equivalent hybrid orbitals is called

Question # 9

Preparation of vegetable ghee involves

Question # 10

Complete combustion of alkane yields

Question # 11

The geometry of acetylene is

Question # 12

When acetylene is passed through a copper tube at 300°C, it polymerizes to

Question # 13

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

Question # 14

Which reaction is too vigorous to control

Question # 15

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

Question # 16

During nitration of benzene, the active nitrating agent is

Question # 17

The elimination of HX from adjacent carbon atoms is called

Question # 18

Hydrocarbons are organic compounds which contain elements such as

Question # 19

Preparation of vegetable ghee involves:

Question # 20

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

Question # 21

All are ortho & Para directing except

Question # 22

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

Question # 23

Zn + HCI are used in

Question # 24

Synthetic rubber is made by polymerization of

Question # 25

Hydrocarbons contain :

Question # 26

Vinyl acetylene combines with HCl to form:

Question # 27

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

Question # 28

Kolb's method is not useful for the production of

Question # 29

What is not a common use of methane

Question # 30

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

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Benzene reacts with ozone and gives
A. Glycerin
B. Glyoxal
C. Maleic anhydride
D. Benzoic acid
2 Sulphuric acid generates nitronium ion by reacting with
A. Nitric acid
B. Nitrogen gas
C. Nitrous acid
D. Potassium nitrate
3 An alkane is produced when an alkyle halide reacts with zinc in the presence of
A. HCl
B. CH3COOH
C. Both a & b
D. None
4 Which one of following is not monocyclic aromatic hydrocarbon
A. Benzaldehyde
B. Benzoic acid
C. Benzene sulfonic acid
D. Biphenyl
5 The general formula of alkane is
A. CnH2n+2
B. CnHn
C. CnH2n
D. C2H2n-1
6 The order of reactivity of halogens in aliphatic substitution reactions is
A. Br2 > C12 > F2
B. C12 > Br2 > F2
C. C12 C12 > Br2
D. F2 > Br2 > C12
7 A fuel has the same knocking property as a mixture of 70 isooctane (2, 2, 4- trimethyl pentane) and 30% n-heptane by volume the octane number of the fuel is
A. 100
B. 70
C. 50
D. 40
8 A six membered ring containing one double bond called
A. Cyclohexene
B. Cyclohexane
C. Cyclohexadiene
D. None
9 The empirical formula of benzene is determined by
A. IR spectra
B. U.V
C. Elemental analysis
D. NMR spectra
10 Alkenes normally have ______ geometry
A. Tetrachedral
B. Linear
C. Planer
D. None

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