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Chemistry Fsc Part 1 Online Test MCQs With Answers
Question # 1
As compared to pure atomic orbitals the hybrid orbitals have.
Choose an answer
Low energy
High energy
Same energy
None of these
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Question # 2
Electrolysis is a process in which a chemical reaction takes place at the expense of
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Chemical energy
Electrical energy
Heat energy
None of these
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Question # 3
A pressure cooker reduces cooking time because.
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Heat is uniformly distributed
Boiling point of water rises
A large flame is used
Vapour pressure of liquid reduces
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Question # 4
An aqueous solution of ethanol in water has vapour pressure
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Equal to that water
Equal to that of ethanol
More than that of H
2
O
less than that of water
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Question # 5
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 # 6
NaCI and sand can be separated by one of the following without filtration
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Formation of solution and filtration
Formation of solution and evaporation without filtration
Sublimation
Chromatiograghy
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Question # 7
The smallest collection of ions in an ionic compound is called.
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Formula unit
Chemical formula
Formula mass
Molecular formula
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Question # 8
Glucose can be converted into ethanol by an enzyme.
Choose an answer
Lipase
Zymase
Sucrose
Urease
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Question # 9
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 # 10
Spectrum produced due to the transition of electron from M-Shall to L-Shell is.
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Absorption
Emission
Continuous
X rays
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Question # 11
The charge on electron was determined by millikan in his oil drop experiment and its value is
Choose an answer
6.023 x 10
-23
C
1.602 x 10
-23
C
1.602 x 10
-19
C
6.625 x 10
-34
C
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Question # 12
The boiling point of water at the top mount Everest is.
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59
o
C
69
o
C
83
o
C
75
o
C
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Question # 13
In the ground state of an atom the electron is present.
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In the nuclsus
In the second shell
Nearest to the nucleus
Farthest from the nucleus
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Question # 14
The volume occupied by 1.4 g of N2 at S.T.P is
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2.24 dm3
22.4 dm3
1.12 dm3
112 cm3
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Question # 15
Cadmium has isotopes.
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3
4
5
9
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Question # 16
In mass spectrometry, ions are separated on the basis of.
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Masses only
Charge only
Change to mass ratio
Mass to charge ratio
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Question # 17
Which of the following species has unpaired electrons in anti bonding molecular orbitals
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O2
N2
B2
F2
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Question # 18
What amount of NaOH is required to prepare 500 g of 0.5 molal solution.
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10 g
20 g
30 g
40 g
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