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Chemistry Fsc Part 1 Online Test MCQs With Answers
Question # 1
Azeotrpic mixture of two liquids boils at a lower temperature than either of them, when
Choose an answer
It is saturated
Is shows positive deviation from Raoult's law
It shows negative deviation from Raoult's law
Is is metastable
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Question # 2
Bohr's model of atom, is contradicted by.
Choose an answer
Planck quantum theory
Pauli's exclusion prinsciple
Heisenberg's uncertainty principle
All of the above
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Question # 3
An aqueous solution of ethanol is water has vaporu pressure.
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Equal to the of water
Equal to that of ethanol
More than that of H2O
Less than that of water
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Question # 4
The comparative rates at which the solutes move in paper chromatography depends on.
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The size of paper used
Their Rt values solutes
Temp of the experiment
Size the chromate grapic tank
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Question # 5
The paramagnetic behaviour of oxygen is well explaned on the basis of.
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M.O Theory
N.B Theory
VSEPR Theory
CF theory
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Question # 6
As the quantum number n increases, the energy difference between adjacent energy level.
Choose an answer
Increase
Remain same
Decrease
No correlation
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Question # 7
Which of the following mixtures of liquids show negative deviation
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Methyl alcohol water
Hydrochloric acid water
Carbon di sulphide chloroform
Chlorobenzene bromobenzene
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Question # 8
The pH of 10-3 mole dm-3 of an aqueous solution of H2SO4 is.
Choose an answer
3.0
2.7
2.0
1.5
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Question # 9
10 g of NaOH have been dissolved per kg of solvent The molality of solution.
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0.25 m
0.5 m
1.0 m
2.0 m
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Question # 10
The molar volume of CO2 is maximum at.
Choose an answer
STP
127
o
C and 1 atm
0
o
C and 2 atm
273
o
C and 2 atm
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Question # 11
The molar volume of CO
2
is maximum at
Choose an answer
STP (0°C and 1 atm)
127° C and 1 atm
0°C and 2 atm
273°C and 2 atm
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Question # 12
If the empirical formula of compound is CH2 and its molecular mass is 56 than what is the actual molecular formula of this compound.
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CH2
C2H4
C3H6
C4H8
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Question # 13
Which statement about Gooch crucible is incorrect.
Choose an answer
It is made up of porcelain
Quick filtration occur by using suction filtering apparatus
All the chemicals which reacts with paper can be filtered.
Filter medium used in this crucible consists many folds of filter paper only.
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Question # 14
Transition from various energy levels to the lowest energy level gives.
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Lyman series
Balmer series
Panchen sereis
Pfund series
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Question # 15
Heat of solution of an ionic compound is equal to.
Choose an answer
Hydration energy
Lattice energy
Slum of both 'a' and 'b'
Difference of both a and b
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Question # 16
When external pressure is 23.7 torr, boiling point of water is
Choose an answer
100
o
C
200
o
C
98
o
C
25
o
C
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Question # 17
n+1 value of 6d orbital is.
Choose an answer
08
09
10
18
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Question # 18
Acetone and chloroform are soluble in each other due to
Choose an answer
Intermolecualr hydrogen bonding
Dipole-dipole interaction
Instantaneous dipoles
All of the above
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