EASY
9th CBSE
IMPORTANT
Earn 100

Law of constant proportion was proposed by . (Proust /John Dalton / Lavoisier)

100% studentsanswered this correctly

Important Questions on Atoms and Molecules

EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 7
Choose the correct word from the brackets to fill in the blank.
The atomic theory of matter was proposed by _____. (Dalton / Bohr / Rutherford)
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 1

Write the atomic symbol of each one of the following elements:
Carbon, chlorine

EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 1

Write the atomic symbol of each one of the following elements:

Sodium, Sulphur

EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 1

Write the atomic symbol of each one of the following elements:

Phosphorus, potassium.

EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 1

Write the atomic symbol of each one of the following elements:

Aluminium, argon.

EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 1

Write the atomic symbol of each one of the following elements:

Hydrogen, helium.

EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 1

Write the atomic symbol of each one of the following elements:

Iron, iodine.

MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 1
Write formula of two simple anions.