HARD
9th ICSE
IMPORTANT
Earn 100

What is wrong in the following symbol? Give the correct symbol.
Sodium (So)

Important Questions on The Language of Chemistry

HARD
9th ICSE
IMPORTANT
Write the formula of Magnesium Sulphate.
HARD
9th ICSE
IMPORTANT
What is the value of 1 amu in grams?
HARD
9th ICSE
IMPORTANT
Complete the following.
Relative atomic mass is defined as the number of times a given atom is heavier than_____of the mass of 1 atom of carbon.
HARD
9th ICSE
IMPORTANT
What will be the mass of hydrogen atom in amu?
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