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

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

Question # 2

The Total coal resources of Pakistan are estimated to be

Question # 3

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

Question # 4

Which reaction is too vigorous to control

Question # 5

To differentiate isomers we use

Question # 6

A salt producing hydrocarbon among these compounds is

Question # 7

Zn + HCI are used in

Question # 8

Kolb's method has limited synthetic applications due to

Question # 9

Kolb's method of alkanes production, is actually

Question # 10

Alkanes are soluble in all except

Question # 11

When benzene is burnt in free supply of air, it is completely oxidized to

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Which of the following reaction is characteristic of benzene

Question # 16

Alkanes containing carbon C18ownwards are

Question # 17

All C - H bond lengths of benzene ring is

Question # 18

The major reaction occurring in the engines of automobiles is

Question # 19

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

Question # 20

Which of the following is not aromatic hydrogencarbon

Question # 21

Catalytic oxidation of alkanes is used for the preparation of

Question # 22

The term aromatic was derives from

Question # 23

When sodium benzoate is treated with soda lime (NaOH) benzene is formed. What is the other product

Question # 24

Benzene is obtained by fractional distillation of

Question # 25

Mustard gas is a :

Question # 26

The geometry of acetylene is

Question # 27

Marsh gas was the name given to

Question # 28

Hydrocarbons are organic compounds which contain elements such as

Question # 29

The addition of HBr is easiest with

Question # 30

Most common reactions of benzene and its derivatives are

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which one of following is not monocyclic aromatic hydrocarbon
A. Benzaldehyde
B. Benzoic acid
C. Benzene sulfonic acid
D. Biphenyl
2 The process in which orbitals of different energies and shapes mix with each other to give equivalent hybrid orbitals is called
A. Isomerization
B. polymerization
C. Hybridization
D. Resonance
3 Aromatic hydrocarbons are the derivatives of
A. Normal series of paraffins
B. Alkene
C. Benzene
D. Cyclohexane
4 Paraffins are also called
A. Alkanes
B. Alkynes
C. Alkenes
D. None of these
5 Mustard gas is a
A. Gas
B. High boiling speed
C. High melting liquid
D. Steam
6 Polymerization of ethane take place at pressure of 100 atm and a temperature of
A. 200°C
B. 400°C
C. 600°C
D. 800°C
7 The presence of a double bond in a compound is the sign of
A. Saturation
B. Unsaturation
C. Substitution
D. None of above
8 The hydrocarbons having double bonds normally end with suffix
A. Ane
B. Ene
C. Yne
D. Oic
9 The empirical formula of benzene is determined by
A. IR spectra
B. U.V
C. Elemental analysis
D. NMR spectra
10 The term aromatic was derives from
A. Greek word
B. Latin
C. Russian
D. English

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