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

During the preparation of alkynes the active metals that react with tetra halo-alkanes are

Question # 2

Benzene does not undergo polymerization and it is also resistant to

Question # 3

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

Question # 4

De halogenatiion of tetrahalides happens in the presence of active metal like

Question # 5

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

Question # 6

Which of the following acid can be used as a catalyst in Friedal Craft's reactions

Question # 7

Which one does not declourized KMnO4

Question # 8

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

Question # 9

The hydrocarbon used for polymerization is

Question # 10

The presence of a double bond in a compound in the sign of:

Question # 11

The Total coal resources of Pakistan are estimated to be

Question # 12

Eletronegativity difference in C-C bond in alkanes is:

Question # 13

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

Question # 14

Which of the following is an ortho-para directing group

Question # 15

Boiling point of n-butane is:

Question # 16

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

Question # 17

The sp2hybird orbitals are oriented in space at one angle

Question # 18

Hydrocarbons are organic compounds which contain elements such as

Question # 19

Alkanes have functional group :

Question # 20

Benzene is obtained by fractional distillation of

Question # 21

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

Question # 22

The term aromatic was derives from

Question # 23

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

Question # 24

Preparation of vegetable ghee involves:

Question # 25

Which of the following is not an ortho-para directing group

Question # 26

Benzene was discovered by Michael Faraday's in

Question # 27

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

Question # 28

Alkenes combine readily with electrophillic reagents such as halogens giving

Question # 29

The saturated hydrocarbons usually end with suffix ______

Question # 30

Kolb's method is not useful for the production of

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 B-B'-dichloroethyl sulphide is commonly known as
A. Mustard gas
B. Laughing gas
C. Phosgene gas
D. Bio gas
2 Hybridization in alkanes is:
A. sp
B. sp2
C. sp3
D. dsp2
3 The Total coal resources of Pakistan are estimated to be
A. 184 billion
B. 184 million tones
C. 1.84 billion tounes
D. 1.84 million tonnes
4 Replacement of hydrogen by NO2group is called
A. Sulphonatioin
B. Hydration
C. Nitration
D. Cracking
5 Which of the following is not aromatic hydrogencarbon
A. Benzene
B. Naphthalene
C. Toluene
D. Cyclohexene
6 Ethylene combines with water in the presence of H2SO4+ HgSO4and forms
A. Ethyle chloride
B. Ethyle alcohol
C. Carboxylic acid
D. None of these
7 A single benzene ring can have ______ ortho position maximally
A. One
B. Two
C. Three
D. Four
8 Which is the used as test for the presence of alkenes
A. Reaction of cold dilute alkaline KMnO4
B. Combustion
C. Polymerization
D. Catalytic hydrogenation
9 The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with the rule
A. Hund's rule
B. Markowvikov's rule
C. Pauli's exclusion principle
D. Auf ban principle
10 Which of the following is an ortho-para directing group

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