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

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

Question # 2

The sp2hybird orbitals are oriented in space at one angle

Question # 3

Cyclohexane can be converted not benzene in the presence of

Question # 4

Alkene general formula :

Question # 5

B-B'-dichloroethyl sulphide is commonly known as

Question # 6

Preparation of vegetable ghee involves

Question # 7

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

Question # 8

The compound prepared by a substitution reaction of benzene is

Question # 9

The reaction in which ketone is reduced to the alkane is called

Question # 10

Marsh gas was the name given to

Question # 11

Write the name of following alkene CH2= CH - CH = CH2

Question # 12

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

Question # 13

Hydrocarbons contain :

Question # 14

Which one does not declourized KMnO4

Question # 15

Benzene is not prepared from

Question # 16

C18and onward hydrocarbons are normally

Question # 17

Substitution of halogen in the benzene ring requires catalyst

Question # 18

Catalytic oxidation of alkanes is used for the preparation of

Question # 19

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

Question # 20

Synthetic rubber is made by polymerization of

Question # 21

Which one of the following is (m-xylene)

Question # 22

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

Question # 23

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

Question # 24

Benzene is prepared from n-hexane in the presence of catalyst

Question # 25

Which of the following is an ortho-para directing group

Question # 26

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

Question # 27

Which one gives acidic reactions?

Question # 28

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

Question # 29

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

Question # 30

The reaction-method that does not give an alkane is

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Benzene does not undergo polymerization and it is also resistant to
A. Reduction
B. Oxidation
C. Alkylation
D. Ozonolysis
2 The compound prepared by a substitution reaction of benzene is
A. Acetophenone
B. Glyoxal
C. Cyclohexame
D. Hexabromo cyclohexane
3 The term aromatic was derives from
A. Greek word
B. Latin
C. Russian
D. English
4 Formula of chloroform is
A. CH3CI
B. CCI4
C. CH2CI2
D. CHCI3
5 Preparation of ethylbenzene by the reaction of bromobenzene, ethylbromide and sodium is called
A. Wurtz reaction
B. Fitting reaction
C. Wurtz fitting reaction
D. None of these
6 Hydrocarbons contain :
A. Carbon only carbon
B. Hydrogen only
C. Carbon & hydrogen
D. Carbon , hydrogen & halogen
7 Hydrocarbons are divided into aliphatic, alicyclic and aromatic which structure among the following show an alicyclic hydrocarbon
8 Which decolourizes the colour of Br3
A. CH4
B. CH3-CH3-CH3
C. CH2=CH2
D. CH3-CH3
9 Catalytic oxidation of alkanes is used for the preparation of
A. Adehydes
B. Ketones
C. Fatty acid
D. Carbonyylic acids
10 The three alternate single and double bonds in the benzene ring are called
A. Conjugate bonds
B. Resonating bonds
C. Both A and B
D. None of above

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