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WorksheetsChemistry SS1
Total questions: 16
Worksheet time: 8mins
The equation V=kT constant is the mathematical expression of:
Charles law
Boyle law
Gram law
Law of diffusion
The equation V=kT constant is the mathematical expression of:
Charles law
Boyle law
Gram law
Law of diffusion
The compound X₂O₃ contains two unknown elements X and O. If the relative molecular mass of X₂O₃ is 102 u, what is the relative atomic mass of element X?
a) 22
b) 24
c) 27
d) 28
The correct electronic configuration of ’Mg ”is:
1s’, 2s', 2 p‘, 3s',3 p‘.4s 3d‘
1s’ , 2s’,2p‘,3s'
1s’, 2s', 2 p‘,3s',3 p‘, 4s',3d’
1s’, 2s', 2 p‘,3s',3 p‘, 4s',3d’
Which isotope of hydrogen (¹H, ²H, or ³H) contributes the most to the average atomic mass of hydrogen in naturally occurring samples?
a) 1H
b) 2H
c) 3H
d) None of the above
What is the relative molecular mass of methane (CH₄)?
a) 16
b) 18
c) 20
d) 22
The molar mass of a substance is numerically equal to its formula mass in amu (atomic mass units). True/False
Which of the following statements is correct when a mixture of sodium chloride and ammonium chloride is heated?
Ammonium chloride sublimes
Both compounds melt
Sodium chloride fuses
Sodium chloride melts
The atoms 4020A and 41xB are isotopes of the same element. The value of x in atom B is
41
40
21
20
The proper formula for magnesium hydroxide:
MgOH
Mg2OH
Mg(OH)2
Mg2OH2
What is the number of protons that the element in this image contain?
14
7
15
18
The bond which is formed by complete transfer of electrons from one atom to another is called:
ionic bond
covalent bond
coordinate covalent bond
metallic bond
the number of known elements up till now is..........elements
92
118
121
211
How many mole of AgNO3 are there in 500cm3 of 0.01M AgNO3 solution?
0.005
0.5
0.25
0.2
The number of particles in one mole of a chemical compound is the
atomic number
Avogadro’s number
mass number
oxidation number
