Class 9 Chemistry MCQ
The equation of relationship between atomic number (Z) and mass number (A) is
A = Z + N
A = Z – n
A = Z
A =2Z + n
One carbon is _________ times heavier than hydrogen.
12
13
14
15
It is a triatomic molecule
Sodium chloride
Water
Chalk
Glucose
The mass of one molecule of water is:
18 amu
18g
18mg
18kg
The molecular mass of water is
16 amu
14 amu
18 amu
20 amu
___________ is a pure substance that can be broken down.
Matter
Element
Mass
Mixture
The quantity of a matter in a body is called ____________
Mass
Weight
Atom
Molecule
The molar mass of H2SO4 is:
98 g
98 amu
9.8 g
9.8 amu
Neutrons have _________ charge.
+
_
No
Nil
Mixture has _________ types.
3
2
1
No types
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