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Online Tests
Chemistry Fsc Part 1 Online Test MCQs With Answers
Question # 1
What is bond order.
Choose an answer
Number of unpaired electrons
Number of paired electrons
Number of electrons present in antibonding molecular orbital
Number of bond formed between two atoms after overlap
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Question # 2
the volume occupied by 1.4 of N2 at S.T.P is
Choose an answer
2.24 dm3
22.4 dm3
1.12 dm3
112 cm3
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Question # 3
An atomic orbital has l =1 , m =+1, 0, -1, n = 3 than which one of the following atomic orbital has such values.
Choose an answer
2s
2p
3p
3d
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Question # 4
A real gas obeying Van der Waal's equation will resemble ideal gas if.
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Both a and b are large
Both a and b are small or zero
A is small and b is large
A is large and b is small
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Question # 5
Chromatography in which stationary phase is a solid is called.
Choose an answer
Partition chromatography
Paper chromatography
High pressure liquid chromatography
Adsorption chromatography
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Question # 6
Salt of weak acid with strong base when dissolved in water gives.
Choose an answer
Acidic solution
Basic solution
Neutral solution
None of above
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Question # 7
One molecule of hemoglobin in heavier than one atom of hydrogen.
Choose an answer
680 times
6800 times
68000 times
680000 times
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Question # 8
Standard enthalpy change when one mole of compound is formed from their elements at standard state is.
Choose an answer
Heat of formation
Standard heat of formation
Heat of combustion
Standard Heat of neutralization
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Question # 9
If we plot a graph between I/V at x-axis and pressure at Y -axis
Choose an answer
a parabolic graph is obtained
By increasing temperature straight line move toward x axis
By increases temperature straight line move toward y axis.
No. change in line by increasing temperature.
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Question # 10
Dipole Moment of H2O is.
Choose an answer
1.61 D
1.85 D
0.95 D
1.49 D
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Question # 11
NaCI and sand can be separated by one of the following without filtration
Choose an answer
Formation of solution and filtration
Formation of solution and evaporation without filtration
Sublimation
Chromatiograghy
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Question # 12
If an endothermic reaction is allowed to take place very rapidly i the air, the temperature fo the surrounding air.
Choose an answer
Remains constant
Increase
Decrease
Remain unchanged
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Question # 13
Water and Phenol are partially miscible to each other at room temperature when both liquids are mixed together which is upper layer.
Choose an answer
Water in Phenol
Phenol and water
Pure phenol
Pure water
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Question # 14
18 g of glucose is dissolved in 90 g of water. The relative lowering of vapour pressure is equal to
Choose an answer
1/5
5.1
1/51
6
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Question # 15
The wave number of the light emitted by a certain source is 2 x 10
6
m
-1
The wave length of this light is.
Choose an answer
500 nm
500 m
200 nm
600 m
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Question # 16
In mass spectrometry, ions are produced by
Choose an answer
Heat at high temperature
Passing gas through high voltage plates
Throwing fast moving electrons on gas molecules
All of them
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Question # 17
The shape of Sncl2 molecule is.
Choose an answer
Linear
Angular
Trigonal planar
Tetrahedral
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Question # 18
The heat contents of the system of known as.
Choose an answer
Entropy
Enthalpy
Work
Free energy
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