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Online Tests
Chemistry Fsc Part 1 Online Test MCQs With Answers
Question # 1
One dm3 of a buffer solution containing 0.01 M NH4Cl and 0.1 M NH4OH having pKa of 3 has pH.
Choose an answer
4
6
9
10
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Question # 2
How many moles of AgCI are produced by combination of 1.0 mole of AgNO
3
and 2.0 mole of NaCI
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1.0
2.0
3.0
4.0
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Question # 3
If the energy of the activated complex lies close to energy of reactants, it means that reaction is
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Slow
Fast
Exothermic
Endothermic
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Question # 4
The molar volume of CO2 is maximum at.
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STP
127
o
C and 1 atm
0
o
C and 2 atm
273
o
C and 2 atm
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Question # 5
In order to mention the B.P of water at 110
o
C the external pressure should be.
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Between 760 torr and 1200 torr
Between 200 torr and 760 torr
765 torr
Any value of pressure
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Question # 6
The temperature which partially immiscible pair of liquid leads to the formation of a single phase in called.
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Transition temperature
Absolute temperature
Consulate temperature
Room temperature
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Question # 7
Ice float over water because.
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Its structure is diamond like
Its density is maximum at 4
o
C
It is less dense than water
It has no regular arrangement of molecules.
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Question # 8
Solubility of which substance decreases by increasing temperature.
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NaNO3
KNO2
NaCl
Ce2(SO4)3
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Question # 9
Rutherford's model of atom failed because
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The atom did not have a nucleus and electrons
It did not account for the attraction between protons and neutrons
It did not account for the stability of the atom
There is actually no space between the nucleus and the electrons
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Question # 10
Which of the following molecules have highest bond energy
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F2
Cl2
Br2
I2
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Question # 11
Heat of solution of an ionic compound is equal to.
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Hydration energy
Lattice energy
Slum of both 'a' and 'b'
Difference of both a and b
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Question # 12
A molecule has two ions pairs and two bond pairs around the central atom. The shape of molecule is.
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Linear
Pyramidal
Angular
Tetrahedral
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Question # 13
A molecular orbital can accommodate maximum electron
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2
6
8
10
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Question # 14
At constant volume of a system remains constant and the heat is absorbed by the system, them amount of heat absorbed is called
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Enthaply change of the system
Internal energy change of the system
Total enthalphy of the system
Total internal energy of the system
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Question # 15
Choose an answer
dm
+6
mole
-2
mole
2
dm
-6
Mole dm
-3
Having no units
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Question # 16
The real gas obeying Van der Waal's equation will resemble ideal gas is.
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both 'a' and 'b' are large
both 'a' and 'b' and small
'a' is small and 'b' is large
'a' is large and 'b' is small
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Question # 17
According to MOT, which molecular orbital has highest energy.
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sigma 1s
pi+ 2S
pi 2py
Pi+ 2px
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Question # 18
Which one of the following correctly describe the shape of NH3 molecules.
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tetrahedral
Pyramidal
Angular
Square planar
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