HARD
9th ICSE
IMPORTANT
Earn 100

What is the value of 1 amu in grams?

Important Questions on The Language of Chemistry

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.
EASY
9th ICSE
IMPORTANT
A change in the_____ occurs as the atoms in the reaction undergo chemical change.
MEDIUM
9th ICSE
IMPORTANT
Symbol represents _____ atom(s) of an element.
MEDIUM
9th ICSE
IMPORTANT
The formula of caustic potash is_____.
HARD
9th ICSE
IMPORTANT

The formula of washing soda is _____.

(A) Na2CO3.10H2O              (B) Na2CO3                (C) Na2CO3.2H2O

Enter your correct answer as A, B or C.

HARD
9th ICSE
IMPORTANT

Limestone is _____.

(A) CaCO3                  (B) CaO                   (C) CaOH2

Enter your correct answer as A, B or C.