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WorksheetsLanguage of Chemistry
Total questions: 15
Worksheet time: 5mins
Name
Class
Date
1.
What is the valency of lead ?
a)
1,2
b)
5,7
c)
2,4
d)
1,4
2.
True or False: Law of conservation of energy states that matter can neither be created nor destroyed
a)
True
b)
False
3.
The valency of Chlorine in AlCl3 is
a)
1
b)
3
c)
2
4.
The molecular formula for Ammonium carbonate is
a)
(NH4 )2CO3
b)
(NH4 )CO3
c)
(NH4 )2CO
5.
What is the name of 13th element
(a)
6.
Formula of baking soda
a)
NaHCO3
b)
Nacl
c)
H2SO4
7.
How many valence electrons are in an atom of Ar?
a)
2
b)
8
c)
4
d)
1
8.
valency of chloride ion is
a)
0
b)
+1
c)
-1
d)
2
9.
What is the molecular formula of acetic acid
(a)
10.
sugar formula ?
a)
K2CO3
b)
Na3PO4
c)
C12H22O11
11.
What is the mass number defined as?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
12.
What is the atomic number of this atom?
a)
1
b)
3
c)
4
d)
7
13.
What is the mass number of this atom?
a)
1
b)
3
c)
4
d)
7
14.
Which subatomic particle has a negative charge in the atom?
a)
proton
b)
neutron
c)
electron
d)
quark
15.
nitrate ion contains
a)
nitrogen and oxygen
b)
Nitrogen only
c)
Nitrogen ,hydrogen and oxygen
d)
Sodium and nitrogen
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