Class 9 Chemistry MCQ
An ion is a charged particles:
True
False
In some conditions
Never
The No. of atoms in 1 mole of carbiton is
6.02 x 1021
6.02 x 1022
6.02 x 1023
6.02 x 1024
It is heterogeneous mixture
Sand
Milk
Air
Brass
The atomic number is represented by ____________
A
Y
X
Z
Atoms as a whole is _________
+
_
No
Neutral
The number of proton in an atom is called _________ number.
Molecule
Formula
Atomic
Molar
The symbol of sodium is :
Sa
Na
Pa
Ca
_________ elements naturally occurring.
92
118
93
117
The smallest under of an ionic compound is
Atom
Formula unit
Ion
Molecule
Electron _____________ energy when thy jump from higher to lower level.
Absorb
Radiate
Nothing
Nil
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