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5th February 2013, 12:08 PM
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Join Date: May 2012
Re: Sample papers of science of class 10

There are 2 parts contains in the CBSE class 10th Science question paper:

Part A
Part B

Part A
1. In electrolysis of water, why is the volume of gas collected over one electrode double the volume of gas collected over the other electrode?

2. What effect does an increase in the concentration of H+ (aq.) in a solution have on the pH of the solution?

3. What happens when a small piece of sodium is dropped into ethanol?

4. Draw a schematic diagram of an electric circuit consisting of a battery of two cells 1.5 V each, 5 Ω, 10 Ω and 15 Ω resistors and a plug key, all connected in series.

5. When is the force experienced by a current-carrying conductor placed in a magnetic field the largest?

Part B

17. Which compounds are responsible for the depletion of ozone layer?

18. Why is DNA copying an essential part of the process of reproduction?

19. Where does digestion of fat take place in our body?

20. How is charcoal obtained from wood? Why charcoal is considered a better fuel than wood?

21. Describe how hydro-energy can convert into electrical energy. Write any two limitations of hydro – energy?

For the detailed question paper, here is attachment:
Attached Files
File Type: pdf CBSE Class 10th Science paper.pdf (83.7 KB, 60 views)


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