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Class 9 Science - Questions & Answers CBSE ICSE

Class 9 Science has a total of 15 topics including Atoms and Molecules, Structure of the Atom and others. You can choose a topic of your choice to practice your understanding/ knowledge in these.
According to the law of conservation of mass, during any chemical change, the total mass of the _________.

Mercuric oxide → mercury + oxygen
100g → 92.6 g + ______

What will be the amount of oxygen obtained in this reaction?

In water, hydrogen and oxygen are present in the ratio of _________.

An example of a triatomic molecule is _________.

The quantity of matter present in an object is called its _________.
Indivisibility of an atom was proposed by _________.

All samples of carbon dioxide contain carbon and oxygen in the mass ratio of 3 : 8. This is in agreement with the law of ____________.

The atomic mass of sodium is 23. The number of moles in 46g of sodium is __________.
The molecular formula of potassium nitrate is __________.

Kalium is the Latin name of _________.
Topics in Class 9 Science:
Atoms and Molecules
Structure of the Atom
Improvement in Food Resources
Gravitation
Force and Laws of Motion
Matter in Our Surroundings
Is Matter Around Us Pure
Motion
Natural Resources
Why Do We Fall Ill
Tissues
Diversity in Living Organisms
The Fundamental Unit of Life
Sound
Work and Energy
Mathematics:
Class 1 - Mathematics
Class 2 - Mathematics
Class 3 - Mathematics
Class 4 - Mathematics
Class 5 - Mathematics
Class 6 - Mathematics
Class 7 - Mathematics
Class 8 - Mathematics
Class 9 - Mathematics
Class 10 - Mathematics
Science:
Class 1 - Science
Class 2 - Science
Class 3 - Science
Class 4 - Science
Class 5 - Science
Class 6 - Science
Class 7 - Science
Class 8 - Science
Class 9 - Science
Class 10 - Science
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