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

Physical properties of alkanes increase with increase of all physical constants except

Question # 2

The compound prepared by a substitution reaction of benzene is

Question # 3

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

Question # 4

During nitration of benzene, the active nitrating agent is

Question # 5

Paraffins are also called

Question # 6

Benzene has a -------- structure

Question # 7

Odour of alkene is:

Question # 8

The sp2hybird orbitals are oriented in space at one angle

Question # 9

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

Question # 10

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

Question # 11

Kolb's method of alkanes production, is actually

Question # 12

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

Question # 13

The general formula of alkane is

Question # 14

the unreactivity of alkanes is based upon

Question # 15

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

Question # 16

Acetylene gives

Question # 17

Which of the following species participate in sulphonation of benzene ring?

Question # 18

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

Question # 19

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

Question # 20

Hydrocarbon which is liquid at room temperature is

Question # 21

Mustard gas is a :

Question # 22

Acetylene is used in the manufacture of

Question # 23

The hydrocarbon used for polymerization is

Question # 24

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

Question # 25

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

Question # 26

Incomplete oxidation of alkanes yields

Question # 27

Zn + HCI are used in

Question # 28

Formula of chloroform is:

Question # 29

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

Question # 30

Which one does not declourized KMnO4

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 To differentiate isomers we use
A. n-
B. iso-
C. neo
D. All of them
2 Hydrogenation of alkenes/alkynes inthe presence of Ni as catalyst at 3000°C result in the formation of corresponding alkanes. This reaction is known as
A. Sabatier-senderens reaction
B. kolbes reaction
C. Cannizaro's reaction
D. Haloform reaction
3 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
4 Which one of following is not monocyclic aromatic hydrocarbon
A. Benzaldehyde
B. Benzoic acid
C. Benzene sulfonic acid
D. Biphenyl
5 During reaction of O2and alkenes, a product:
A. Glycol
B. Epxide
C. Halohydrin
D. Ethylene glycol
6 Alkanes have functional group :
A. ----X
B. --OH
C. ----COH
D. No functional group
7 All are ortho & Para directing except
A. X
B. OH
C. NR3
D. NH2
8 Alkanes are gases :
A. C1-C4
B. C5-C10
C. C11-C15
D. C10-C20
9 The addition of unsymmetrical reagent to unsymmetrical alkene is in accordance with the rule:
A. Hund's rule
B. Markownikov's rule
C. Pauli's Exclusion Principle
D. Auf bau Principle
10 Benzene is obtained by fractional distillation of
A. Heavy oil
B. Anthracene oil
C. Middle oil
D. Light oil

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