EASY
9th CBSE
IMPORTANT
Earn 100

Give the formula of the following compounds.

Cupric oxide.

Important Questions on Atoms and Molecules

EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 17

Give the formula of the following compound.

Ferric oxide.

EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 17
Give the formula of the following compound.
Ammonium hydroxide.
EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 17
Give the formula of the following compound.
Calcium carbonate.
EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 17

Give the formula of the following compounds.

Potassium carbonate.

MEDIUM
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 18
What rules are to be kept in mind while writing a chemical formula?
HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 19

What is the mass (in gram) of  1 atom of oxygen.

HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 19

What is the mass of (in gram) of.

1 atom of sodium.

HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 20
Which has more number of atoms: 
100 grams of Magnesium or 100 grams of Aluminium (Given: Atomic mass of Mg=24u, Al=27u).