EASY
9th CBSE
IMPORTANT
Earn 100

State the law of constant proportions. Give one example to illustrate this law.

Important Questions on Atoms and Molecules

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 53

State the various postulates of Dalton's atomic theory of matter.

EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 53
Which postulate of Dalton's atomic theory can explain the law of conservation of mass?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 53
Which postulate of Dalton's atomic theory can explain the law of constant proportion?
EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 54
What is the significance of the symbol of an element? Explain with the help of an example.
EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 54
Explain the significance of the symbol H. 
EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 55
What is an atom? How do atoms usually exist?
EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 55
What is a molecule? Explain with an example.
EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 55
What is the difference between the molecule of an element and the molecule of a compound? Give one example of each.