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Online Tests
Chemistry Fsc Part 1 Chapter 1 Online Test MCQs With Answers
Question # 1
When one mole of each of the following is completely burned in oxygen, which gives the largest mass of carbon dioxide.
Choose an answer
Diamond
C2H6
Methane
CO2
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Question # 2
The volume occupied by 1.4 g on N
2
at S.T.P is
Choose an answer
2.24 dm
3
22.4 dm
3
1.12 dm
3
112 cm
3
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Question # 3
Cadmium has isotopes.
Choose an answer
3
4
5
9
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Question # 4
Isotopes differ in.
Choose an answer
Properties which depend upon mass
Arrangement of electrons in orbitals
Chemical properties
None of these
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Question # 5
One mole of ethanol and one mole of ethane have an equal
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Masses
Number of atoms
Number of electrons
Number of molecules
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Question # 6
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 # 7
One mole of CH
3
OH and one mole of C
2
H
5
OH have
Choose an answer
Equal number of atoms
Equal number of molecules
Equal number of electrons
Equal number of protons
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Question # 8
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 # 9
Which statement is incorrect about Dempster's mass spectrometer.
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Solid sample can be used in this mass spectrometer
Ions are detected on the basis of mass to charge ratio
Atoms or molecules are ionized with beam of electron.
This spectrometer work at one atmospheric pressure.
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Question # 10
Isotopes are the atoms of same element with similar chemical properties but different
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Atomic number
Atomic volume
Atomic weight
Atomic structure
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Question # 11
Which of the following compound has the highest % o f oxygen by weight
Choose an answer
CH
3
- OH
C
2
H
5
OH
HCOOH
H
2
O
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Question # 12
More abundant isotope of an element is the one with.
Choose an answer
Even atomic number
Odd atomic number
Even mass number
Odd mass number
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Question # 13
How many moles of AgCI are produced by combination of 1.0 mole of AgNO
3
and 2.0 mole of NaCI
Choose an answer
1.0
2.0
3.0
4.0
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Question # 14
Nickel has isotopes
Choose an answer
3
5
6
11
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Question # 15
The largest number of molecules are present in
Choose an answer
3.6 of H2O
4.6 g of C2H5OH
2.8 g of CO
5.4 g of N2O5
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Question # 16
Haemoglobin is a Macro molecule and consists of approximately atoms.
Choose an answer
5000
10,000
68000
15000
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Question # 17
The Number of moles of CO2 which contain 8.0 of oxygen.
Choose an answer
0.25
0.15
0.35
1.45
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