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ECAT Chemistry Chapter 18 Fundamental Principles of Organic Chemistry Online Test MCQs With Answers
Question # 1
The active part in a molecule is called
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Hetroatom
Functional group
Chemical bond
Ion
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Question # 2
Geographical survey of Pakistan estimates about billion tons of coal in Pakistan:
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182
183
184
185
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Question # 3
Which structure shows a primary alcohol
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Question # 4
The branch of chemistry which deals with the study of compounds containing carbon as an essential elements is called
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Physical
Inorganic
Nuclear
Organic
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Question # 5
Number of
isomers of butane are:
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One
Two
Three
Four
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Question # 6
Peat before conversion to bituminous coal is converted to
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Lignite
Anthracite
Asphalt
None
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Question # 7
The functional group isomer of dimethylether is
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Ethyl alcohol
Propyl alcohol
Diethyl ether
Butyl alcohol
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Question # 8
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0 1
0 2
1 1
1 2
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Question # 9
In sp
2
type hybridization the three equivalent sp
2
orbitals lie in the same plane and at angle of
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0
°
60
°
120
°
180
°
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Question # 10
The distillation of coal at high temperature and in absence of air is called
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Vacuum distillation
Normal distillation
Fractional distillation
Destructive distillation
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Question # 11
On passing ethane into concentrated suphuric acid the intermediate compound formed on hydrolysis with boiling water gives
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Methyl alcohol
Ethyl alcohol
Ethyl hydrogen sulphate
Methyl hydrogen sulphate
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Question # 12
Alkynes normally have ______ hybridization
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Sp
Sp
2
SP
3
d sp
3
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Question # 13
Linear shape is associated with which set of hybrid orbitals
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sp
sp
2
sp
3
dsp
2
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Question # 14
The process in which orbitals of different energies and shapes mix up with each other to give equivalent is called,
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Hybridization
Polymerization
Isomerisation
Carbonization
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Question # 15
The general formula for alkenes is
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C
n
H
2n+1
C
n
H
2n+2
C
n
H
2n
C
n
H
2n-2
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Question # 16
The open chain compounds are also called
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Aliphatic
Alicylic
Aromatic
Both a and b
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Question # 17
Hydrocarbons contain
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C and S only
C and H only
C, H, and O only
C, H, O and N only
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Question # 18
Benzene is an example of
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Aromatic compound
Cyclic compound
Aliphatic compound
A cyclic compound
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Question # 19
Coal heated in the absence of air of about 500 - 1000
°C is converted to
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Coke
Coal gas
Coal tar
All above
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Question # 20
Organic compounds are soluble in all except
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Benzene
Petroleum
Ether
Water
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Question # 21
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3
4
5
2
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Question # 22
The state of hybridization of carbon atom in methane is:
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sp
3
sp
2
sp
dsp
2
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Question # 23
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0
1
2
3
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Question # 24
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Addition Elimination
Addition Reduction
Elimination Reduction
Substitution Elimination
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Question # 25
Gasoline is a mixture of hydrocarbons containing carbon atoms
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5 to 10
5 to 8
5 to 12
5 to 11
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Question # 26
How many structural acid cis-trans isomers are there for dichloroprepe, C
3
H
4
Cl
2
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3
5
6
7
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Question # 27
The essential component of organic compound is
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O
C
P
N
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Question # 28
The use of tetra ethyl lead in petrol as an efficient antiknock agent is being discouraged. Which reason is correct
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It is costly
It damages the engine
Pb is difficult to obtain in bulk quantities
The combustion product, lead, causes air pollutions
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Question # 29
Angle 120
° is observed in molecules :
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CH
4
CH
3-
CH
3
CH -CH
CH
2 =
CH
2
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Question # 30
A nuclophile must
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Be an atom
A group of atoms
Have a lone pair
Be negatively charged
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Question # 31
Self linkage of carbon to produce long chains
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isomerism
Polymorphism
Polymerization
Catenation
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