HARD
9th ICSE
IMPORTANT
Earn 100

What will be the mass of hydrogen atom in amu?

Important Questions on The Language of Chemistry

MEDIUM
9th ICSE
IMPORTANT
Calculate the percentage composition of K in KCIO3.
HARD
9th ICSE
IMPORTANT

2NaHCO3_____+ H2O+CO2

(A) Na2CO3                     (B) Na                       (C) Na2O

Enter your correct answer as A, B or C.

MEDIUM
9th ICSE
IMPORTANT
Modern atomic symbols are based on the method proposed by
HARD
9th ICSE
IMPORTANT
The symbol for carbonate ion is
EASY
9th ICSE
IMPORTANT
The chemical symbol of sodium is Na. Write its Latin name.
HARD
9th ICSE
IMPORTANT
What is the molecular formula of aluminium hydroxide?
HARD
9th ICSE
IMPORTANT
Write an example of one reactant and two products.
MEDIUM
9th ICSE
IMPORTANT
Give difference between relative atomic mass and relative molecular mass.