Download CBSE Class 9 Previous Year Papers 2020-21 Session in PDF

A. A pure substance may be defined as a single substance (or matter) which cannot be separated by simple physical methods. Elements: An element consists of only one type of particles.

A. Matter- Matter is anything which occupies space and has mass is called matter. Air and water, sugar and sand, hydrogen and oxygen etc. The matter is made up of very small tiny particles. Particles of matter have space between them they attract each other.

A. Information and communications technology (ICT) is an extensional term for information technology (IT) that stresses the role of unified communications and the integration of telecommunications (telephone lines and wireless signals) and computers, as well as necessary enterprise software, middleware, storage.

A. Every class in your academics are important. The most important reason why class 9th is important is: that you have to pass class 9th to appear for the board exams in class 10th. The third reason why class 9th is important is: that the continuation of class 9th is in class 11th, so you will get the basics cleared in class 9th itself.

A. 
1. Make detailed notes for every chapter in your own handwriting.
2. Do revise those notes at regular intervals.
3. Solve all questions multiple times
4. Students are going to coaching or not self-study matters a lot.
5. Get good study materials other than your textbooks.
6. Try to teach what you have learnt to your friends and others, this will help to understand better.
7. Don’t make any doubt in your mind to be not clear.