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CBSE Notes 2011-2012

IX

10 Tips for Better Grades in CBSE Maths

1. Don't just aim for 70%. Aim high and shoot for 100%.

2. When doing your math homework, be neat. It does make a difference.

3. It's not just the answer that counts in math. Much of your grade is based on the intermediate steps in getting to the answer. So show all your work. Your objective should be to convince your teacher that you know how to do the problem.

CBSE Sample papers for 2010

CBSE Sample papers for 2010 are available for you to go through and practice.

You can download the sample papers.

Please Note: The sample papers are only an indication of the format of the actual question paper. They give you an idea of how the questions are organized in the various sections and the approximate level of difficulty.

PRACTISE QUESTIONS On MOLE CONCEPT By JSUNIL

1. Determine the mass of 6.022 X 1023 number of N2 molecules.
2. Calculate the number of particles in-
(i) 8 g of O2 molecules (ii) 2.5 mol of calcium atoms.
3. What is the mass of 2.5 mol of Methane?
4. Find the mass of one molecule of water.
5. Calculate the number of water molecules and number of oxygen and hydrogen atoms in a drop of water containing 0.03 mol of water.

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