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: