MEDIUM
9th CBSE
IMPORTANT
Earn 100

What are the postulates of Dalton's atomic theory?

Important Questions on Atoms and Molecules

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 3
What is atomic mass unit? Is atomic mass unit a practical unit?
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 4
If the mass of  12C  atom is 1.9924×10-23 g, what is the mass of 1 u? 
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 5
Why is it that the elements have fractional atomic masses?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 6
How is the atomic mass of an element different from the actual mass of an atom?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 7
What is the relationship between the number of moles (n) and molar mass (m) of a substance?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 8
How many moles of oxygen atoms are present in one mole of Fe2(SO4)3.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 8
How many moles of oxygen atoms are present in one mole of KMnO4.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 8
How many moles of oxygen atoms are present in one mole of K2Cr2O7.