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Chemistry Fsc Part 1 Online Test MCQs With Answers
Question # 1
A cell in which electric current is produced as a result of spontaneous redox reaction is called.
Choose an answer
Electrolytic cell
Galvanic cell
Half cell reaction
Down's cell
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Question # 2
The number of bonds in nitrogen molecules is.
Choose an answer
One pi and one sigma
One pi and two sigma
Thre sigma only
Two pi and one sigma
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Question # 3
Oxidation number of Cr in a C
2
CrO
4
is
Choose an answer
+2
+4
+6
+8
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Question # 4
How many electrons can be accommodated in sub shell for which n = 3, l = 1
Choose an answer
6
8
18
32
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Question # 5
The iodine present in water can be separated by which one of the following techniques
Choose an answer
Sublimation
Chromatography
Filtration
Solvent extraction
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Question # 6
Quantum number value for 2p sub shell are
Choose an answer
n = 2, I = 1
n = 1, l =1
n = 1, l = 0
n = 2, l = 0
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Question # 7
Unit of rate constant is the same as that of the rate of reaction in
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2nd order reaction
3rd order reaction
Zero order reaction
1st order reaction
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Question # 8
CO+ is an example of.
Choose an answer
Free radical
Cationic molecular ion
Anionic molecular ion
Stable molecule
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Question # 9
Which one of the following correctly describe the shape of NH3 molecules.
Choose an answer
tetrahedral
Pyramidal
Angular
Square planar
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Question # 10
The number of molecules in one dm
3
of water is close to
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Question # 11
The sum of all kinds of energies of atoms, ions or molecules of a system is known as.
Choose an answer
Kinetic energy
Potential energy
Internal energy
Solar energy
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Question # 12
Which of the following statements is not correct regarding bonding molecular orbitals
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Bonding molecular orbitals possess less energy than atomic orbitals from which they are formed
Bonding molecular orbitals have low electron density between the two nuclei
Every electron in the bonding molecular orbitals contributes to the attraction between atoms
Bonding molecular orbitals are formed when the electron waves undergo constructive interference
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Question # 13
More abundant isotope of an element is the one with.
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Even atomic number
Odd atomic number
Even mass number
Odd mass number
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Question # 14
For a given process, the heat chagnes of constant pressure and at constant volume are related to each other as.
Choose an answer
qp= qv
qp<qv
qp>qv
None of these
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Question # 15
Feeling uncomfortable breathing in un pressurized cabins is due to
Choose an answer
High pressure of CO2
Fatigue
Low pressure of O2
Low presssure of CO2
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Question # 16
The deviation of a gas from ideal behavior is maximum at.
Choose an answer
-10
o
C and 5.0 atm
-10
o
C and 2 atm
0
o
C and 2 atm
100
o
C and 2 atm
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Question # 17
Relative lowering of vapour pressure is equl to.
Choose an answer
Mole fraction of solute
Mole fraction of solvent
Molarity
Molality
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Question # 18
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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