(Download) CBSE IX Science Sample Paper: 2012

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Sample Paper – 2012
Class – IX
Subject – Science

Q1. According to Dalton’s atomic theory, what is the definition of atoms?

Q2. Calculate the molar mass of Nitric Acid HNO3 (atomic mass of H=1, N=14, 0=16)

Q3. Calculate the no of moles for 53g of He.

Q4. How many molecules are present in 34 g of ammonia?

Q5. Calculate the number of aluminum ions present in 0.051g of aluminum oxide.

Q6. State the law of conservation of mass? What mass of silver Nitrate will react with 5.85g of sodium chloride to produce 14.35 g of silver chloride and 8.5 g of sodium Nitrate if law of conservation of mass is true?

Q7. What is the work done when a body is moved horizontally along a frictionless surface?

Q8. Define 1 Joule.

Q9. What is the work done on a body moving in a circular path?

Q10. When is work said to be done against the force of gravity?