MEDIUM
9th CBSE
IMPORTANT
Earn 100

What are the drawbacks of Dalton's atomic theory?

Important Questions on Atoms and Molecules

MEDIUM
9th CBSE
IMPORTANT
 What is meant by the term molecular formula? What is the significance of molecular formula?
MEDIUM
9th CBSE
IMPORTANT
What is the number of water molecules contained in a drop of water weighing 0.06 g?    
MEDIUM
9th CBSE
IMPORTANT
How many atoms are there in 16.0 g of 16O?
HARD
9th CBSE
IMPORTANT
How many years would it take to spend Avogadro's number of rupees at the rate of 1 million rupees per second?
MEDIUM
9th CBSE
IMPORTANT
Calculate the total number of molecules in 1.6 g of methane. 
MEDIUM
9th CBSE
IMPORTANT
Calculate the number of moles in 392 g of sulphuric acid.
EASY
9th CBSE
IMPORTANT
Calculate the number of moles in 9.0 g of aluminium.
MEDIUM
9th CBSE
IMPORTANT
Calculate the mass of 1×1023 molecules of methane.