Class 9 Chemistry MCQ
_________ is an example of substance.
Carbon
Hydrogrn
Oxygen
Water
Electrons carry _________ charge.
+
_
Neutral
Bouble Positive
Free radical is a
Extremely stable
Extremely reactive
Extremely inert
All of these
Industrial chemistry deals with the manufacturing of compounds:
in the laboratory
on micro scale
on commercial scale
on economic scale
There are _________ types of bonds.
1
2
3
4
biology bis classified as ___________ science.
Engineering
Physical
Natural
Chemical
Atoms are made of sub _________
Atoms
Molecules
Charge
Atomic particles
There are _________ elements found till now .
120
118
119
117
_________ which occupies space and have mass.
Matter
Atom
Molecule
All of above
One mole of sodium = ______ .
24 g
25 g
26 g
23 g
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