Class 9 Chemistry MCQ
P1V1 = P2V2 is mathematical form of ____________ law.
(‘radio-button-click-target’, “Bohr’s”)
Charles
(‘radio-button-click-target–correctquestions’, “Boyle’s”)
Nil
Bucky Balls are used as ________________
Cutting
Grafting
Lubricants
Nil
The escape of gaseous molecules one by one is called ____________.
Diffusion
Effusion
A & b
Nil
One atmospheric pressure is equal to how many pascals?
101325
10325
106075
10523
Mobility is property of ____________
Liquid
Gases
A & b
Nil
Atoms are arranged in ________________ structure in Bucky balls.
Hollow
Cage
A & B
Nil
The simplest of these has formula:
C60
C10
V20
C30
Gases are the lightest form of mater and their densities are expressed in terms of:
mg cm-3
g cm-3
g dm-3
kg dm-3
Es is symbol of :
Erbium
Einsteinium
Europium
Fremium
Which gas will diffuse faster than others?
Hydrogen
Oxygen
Chlorine
Nitrogen
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