NIOS 11th Board Sample Paper Science



 

NIOS 11th Board 2012 Sample Paper Science

Sample Paper – 2012

Subject – Science

  1. What do you mean by the term ‘energy crisis’? Explain any two ways to overcome this.
  2. Give any two sources of energy you would recommend for our country.
  3. Explain four postulates ofDalton’s Atomic Theory. How can we proof this theory?
  4. How can differentiate between polar and geo – stationary orbits. Draw a suitable diagram of a satellite placed in polar orbit.
  5. Write any two differences between fertilizers and manures. Explain with two examples of each.
  6. What is generalized animal cell? Explain with a suitable diagram.
  7. What do you mean by genes? Where are genes located?
  8. How can we proof that criminals are identified by ‘DNA fingerprinting’?
  9. Which is non – biodegradable waste from the following: D.D.T., agricultural waste, sewage and radioactive waste?
  10. How can we differentiate between biodegradable and non – biodegradable.
  11. Define any two sources of soil pollution and state how do they cause this type of pollution.
  12. Define the energy flow in an ecosystem with a suitable simple food chain.
  13. Explain with a suitable example that energy flow in biosphere is unidirectional.
  14. What is the main ore of Aluminium? What is its formula?
  15. Explain the method employed for the concentration of above named ore.
  16. Write the two names of hormones which is secreted by pancreas. Define one function of each hormone named.
  17. Explain about the role of control rods and coolant in a nuclear reactor.
  18. How can we differentiate between following?
    1. Inexhaustible and exhaustible
    2. Renewable and non – renewable
NIOS 11th Board Sample Paper Science
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