MEDIUM
9th CBSE
IMPORTANT
Earn 100

Calculate the molecular mass of H2SO4 and H3PO4.  

Important Questions on Atoms and Molecules

MEDIUM
9th CBSE
IMPORTANT
How will you calculate mass percentage of an element?
MEDIUM
9th CBSE
IMPORTANT
Give the values of molecular mass of CO2 and gram-molecular mass of CO2.
MEDIUM
9th CBSE
IMPORTANT
How will you calculate molar mass of a substance and number of moles of a substance?
EASY
9th CBSE
IMPORTANT
Define nucleus of an atom
EASY
9th CBSE
IMPORTANT
What is the radius of an atom?  
EASY
9th CBSE
IMPORTANT
Give two examples of molecules containing one kind of atoms only.
EASY
9th CBSE
IMPORTANT
Give two examples of molecules containing two different kind of atoms.