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

Question # 2

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

Question # 3

Aromatic hydrocarbons are the derivatives of

Question # 4

Alkenes normally have ______ geometry

Question # 5

Which gas is produced by treating CaC2with water

Question # 6

Kolb's method of alkanes production, is actually

Question # 7

Substitution of halogen in the benzene ring requires catalyst

Question # 8

The order of dehydration of alcohol

Question # 9

The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with the rule

Question # 10

acetylene can be converted into-while passing through a Cu-tube at 300°C:

Question # 11

During the preparation of alkanes the hydrogenation of alkenes or alkynes the catalyst may be

Question # 12

Which decolourizes the colour of Br3

Question # 13

C18and onward hydrocarbons are normally

Question # 14

Paraffins are also called

Question # 15

The correct order of reactivity of halogens with alkanes is

Question # 16

Alkyne is :

Question # 17

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

Question # 18

An alkynes having Carbon count of 20 is

Question # 19

The Total coal resources of Pakistan are estimated to be

Question # 20

How many isomeric disubtituted products are obtained by the introducing of second group in the ring

Question # 21

Acetylene gives

Question # 22

β-β- dichloroethyle sulphide is commonly known as:

Question # 23

Vinyl acetylene combines with HCl to form:

Question # 24

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

Question # 25

Which of the following substances is used as an antiknock compound?

Question # 26

Alkyl benzenes are readily oxidized by axidfied

Question # 27

Zn + HCI are used in

Question # 28

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

Question # 29

Which is liquid among the following alkenes?

Question # 30

Preparation of vegetable ghee involves:

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 A salt producing hydrocarbon among these compounds is
A. Ehyne
B. Ethene
C. Methane
D. Ethane
2 Mustard gas is a :
A. Gas
B. Liquid
C. Solid
D. High boiling point
3 In which one of the following compound rings are not fused together at ortho positions
A. Phenanthrene
B. Naphthalene
C. Diphenyemethane
D. Anthracene
4 Which one gives acidic reactions?
A. CH3----C≡C-------CH3
B. CH3-----CH2-----HC=CH----CH2
C. CH3----CH=CH2
D. CH3-----C≡CH
5 Which one does not declourized KMnO4
A. Alkenes
B. Alkynes
C. Bezene
D. All above
6 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
7 A single benzene ring can have ______ ortho position maximally
A. One
B. Two
C. Three
D. Four
8 Which of the following is not an electrophitic substitution reaction of benzene
A. Nitration
B. Sulphonation
C. Fridel-Craft alkylation
D. Free radical chlorination of benzene
9 Introduction of a second methyl group in methylbenzene will give how many isomeric dimethyllenzenes
A. 2
B. 1
C. 3
D. 4
10 Write the name of following alkene CH2= CH - CH = CH2
A. 1,3 butadiene
B. Butra -1, 3-diene
C. Both a & b
D. None

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