EASY
9th CBSE
IMPORTANT
Earn 100

What does N.T.P. represent?

Important Questions on Atoms and Molecules

HARD
9th CBSE
IMPORTANT
What is the molar mass of a gas or vapours under N.T.P. conditions?
EASY
9th CBSE
IMPORTANT
Identify the cation and anion in the molecular formula of potassium sulphate?  
EASY
9th CBSE
IMPORTANT
Give the formula of the compound formed by combining Fe2+ and Cl- ions.
EASY
9th CBSE
IMPORTANT

Give one example each of polyatomic cation and polyatomic anion.

EASY
9th CBSE
IMPORTANT
What do the following denote (i) N  (ii) N2?
EASY
9th CBSE
IMPORTANT
Write the chemical formulae of (i) sodium carbonate (ii) calcium sulphate.
EASY
9th CBSE
IMPORTANT
Explain gram atomic mass in terms of mole concept.