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

A six membered ring containing one double bond called

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

Mustard gas is a :

Question # 7

Which is symmetric alkene?

Question # 8

Which of the following is not an electrophitic substitution reaction of benzene

Question # 9

The Total coal resources of Pakistan are estimated to be

Question # 10

The order of dehydration of alcohol

Question # 11

the unreactivity of alkanes is based upon

Question # 12

Cyclohexane can be converted not benzene in the presence of

Question # 13

Formula of chloroform is

Question # 14

In CH4, all the H-C-H bond angles are

Question # 15

The saturated hydrocarbons usually end with suffix ______

Question # 16

The carbon, carbon bond length in benzene is

Question # 17

Kolb's method of alkanes production, is actually

Question # 18

Hydrocarbons are organic compounds which contain elements such as

Question # 19

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

Question # 20

The general formula of alkane is

Question # 21

The benzene molecule contains

Question # 22

All are ortho & Para directing except

Question # 23

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

Question # 24

Preparation of vegetable ghee involves:

Question # 25

Hybridization of each carbon atom in benzene ring is

Question # 26

Free radical mechanism of halogenation of alkanes follow step:

Question # 27

The molecule of ethane possess which hybrization

Question # 28

Ethylene combines with water in the presence of H2SO4+ HgSO4and forms

Question # 29

Paraffins are also called

Question # 30

The stability of acromatic compounds decreases with ------- in the no. of its resonance structure

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Cyclohexane can be converted not benzene in the presence of
A. Pt at 100°C
B. Pt at 250°C
C. Pd at room temperature
D. Pt at room temperature
2 When acetylene is passed through a copper tube at 300°C, it polymerizes to
A. Polyacetylene
B. polyethylene
C. Benzene
D. None of these
3 Which one of the following gases is used for artificial ripening of fruits ?
A. Ethane
B. Ethyne
C. Methane
D. Propane
4 Complete combustion of alkane yields
A. CO2+ H2O
B. CO2+ heat
C. CO + H2O heat
D. CO2+ H2O + heat
5 The treatment of benzene with isobutene in the presence of sulphuric acid give
A. isobutyl benzene
B. tert-Butyl benzene
C. n- Butyl benzene
D. no reaction
6 Boiling point of n-butane is:
A. -102°C
B. -75°C
C. -55°C
D. 55°C
7 Benzene is obtained from benzene sulphonic acid by treating with
A. HCl
B. NaOH
C. H2O
D. NaHCO3
8 Which can be used for dehydration of alcohol
A. P4O10
B. H2SO4
C. H3PO4
D. All of them
9 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
10 During reaction of O2and alkenes, a product:
A. Glycol
B. Epxide
C. Halohydrin
D. Ethylene glycol

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