HARD
9th CBSE
IMPORTANT
Earn 100

Predict the mass possessed by a certain number of oxygen atoms which is equal to the number of molecules present 1 g of hydrogen gas?

Important Questions on Atoms and Molecules

HARD
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>Check Point 04>Q 5
Calculate the number of sodium ions that are present in 212 g of sodium carbonate.
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 1
A sample of pure water, irrespective of its source, contain 11.1% hydrogen and 88.9% oxygen. The data supports
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 2
How many moles are present in 11.5g of sodium?
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 3
In which of the following, the valency of each of the constituent elements is equal to the total number of atoms in one molecule of the compound?
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 4
The chemical symbol for nitrogen gas is
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 5
What will be the mass of 5 mole of SO2?
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 9
In which form do atoms exist in aqueous solutions? Give example.
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 10
Give the symbol of the following element.
Aluminium