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

C18and onward hydrocarbons are normally

Question # 2

Alkene general formula :

Question # 3

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

Question # 4

The saturated hydrocarbons usually end with suffix ______

Question # 5

Which gas is produced by treating CaC2with water

Question # 6

Eletronegativity difference in C-C bond in alkanes is:

Question # 7

Mustard gas is a

Question # 8

During nitration of benzene, the active nitrating agent is

Question # 9

β-β- dichloroethyle sulphide is commonly known as:

Question # 10

Which one gives acidic reactions?

Question # 11

Benzene is obtained by fractional distillation of

Question # 12

The addition of HBr is easiest with

Question # 13

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

Question # 14

Hydrocarbons contain :

Question # 15

Which one of following is not monocyclic aromatic hydrocarbon

Question # 16

All C - H bond lengths of benzene ring is

Question # 17

The alkynides are used for the ----------- of alkynes

Question # 18

Alkanes have functional group :

Question # 19

The temp. used for the hydrogenation of alkenes using Ni is

Question # 20

Zn + HCI are used in

Question # 21

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

Question # 22

A six membered ring containing one double bond called

Question # 23

When n-hexane is heated in the presence of Pt at 500°C, it cyclists to give

Question # 24

Aromatic hydrocarbons are the derivatives of

Question # 25

The method used only for the production of symmetrical alkanes

Question # 26

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

Question # 27

Benzene is obtained from benzene sulphonic acid by treating with

Question # 28

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

Question # 29

Th IUPAC name of the compound having formula (CH3) 3 C - CH = CH2 is

Question # 30

Benzene does not undergo polymerization and it is also resistant to

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 Benzene can be obtained by heating either benzoic acid with X or phenol with Y. X and Y are respectively
A. Zinc dust and soda lime
B. Soda time and zinc dust
C. Zinc dust and sodium hydroxide
D. Soda lime and copper
2 The next homologue of C10H22will be
A. C9H20
B. C12H26
C. C11H24
D. C13H28
3 When acetylene is passed through a copper tube at 300°C, it polymerizes to
A. Polyacetylene
B. polyethylene
C. Benzene
D. None of these
4 Formula of chloroform is
A. CH3CI
B. CCI4
C. CH2CI2
D. CHCI3
5 When sodium benzoate is treated with soda lime (NaOH) benzene is formed. What is the other product
A. Na2CO3
B. NaHCO3
C. Ca(OH)2
D. CaCO3
6 Synthesis rubber is made by polymerization :
A. Chloroform
B. Acetylene
C. Divinyl acetylene
D. Butene
7 The process in which orbitals of different energies and shapes mix with each other to give equivalent hybrid orbitals is called
A. Isomerization
B. polymerization
C. Hybridization
D. Resonance
8 Paraffins are also called
A. Alkanes
B. Alkynes
C. Alkenes
D. None of these
9 Which one of the following gases is used for artificial ripening of fruits
A. Ethene
B. Ethane
C. Methane
D. Propane
10 Ethylene can be prepared in the laboratory by heating together ethyl alcohol and
A. HCI
B. Phenol
C. HF
D. H2SO4

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