Class 9 Chemistry MCQ
Diamonds exists in ____________ form.
Cubic
Linear
Circular
Nil
Which one of the following gas diffuses faster?
hydrogen
helium
fluorine
chlorine
The reverse of evaporation is:
Boiling
Diffusion
Condensation
Freezing
Bucky balls was discovered in ________________
1965
1975
1985
1995
The SI unit of pressure is:
N
N/m2
Pascal
atm
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