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Old December 5th, 2017, 05:29 PM
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Default CHSE Orissa Question Papers Science

Hi I would like to have the sample question for the class 12th Science Examination for the Biology & Physics subject of Council of the Higher Secondary Education, Odisha?
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Old December 6th, 2017, 10:13 AM
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Default Re: CHSE Orissa Question Papers Science

The sample question for the class 12th Science Examination for the Biology & Physics subject of Council of the Higher Secondary Education, Odisha are as follows:

1. Write notes on any two of the following
(a) Reflex action
(b) Innate immunity
(c) Greenhouse effect
(d) Inheritance of colour blindness in man

2. Explain the chromosomal basis of sex determination in animals.

3. Give an account of the human female reproductive system.

4. Describe the structure and functions of human fore-brain.

5. Differentiate between
(a) Phenotype and Genotype
(b) Active immunity and Passive immunity
(c) In-Situ conservation and Ex-Situ conservation
(d) Adenohypophysis and Neurohypophysis

6. State the significance of crossing over.

7. How is the AIDS provirus formed?

8. What is “Ozone Shield”?

9. How is tubectomy effective in birth control?

10. How are kidney stones formed?

11. What is BOD?

12. How does multiple fission occur in Amoeba?

13. What are the forensic applications of DNA finger printing?

14. Write the location and function of malpighian tubules.

15. Explain the mechanism of synaptic-transmission.

16. A copper wire and an aluminium wire of the same diameter have their lengths in the ratio 1 : 2 and their resistivities in the ratio 5 : 9. Compare their resistances.

17. The image of an.extended object kept in front of a lens is found to be virtual, erect and diminished. What is the type of the lens? Draw a neat ray diagram of the image formation by the said lens.

18. Explain what is matter-wave duality. Write the expression for the wavelength of matter waves and name the symbols used.

19. An electron is made to move from east to west with a speed of 10 -8 m/s in a uniform magnetic field of 10 -4T. If the direction of the magnetic field is from south to north, calculate the magnitude and direction of the magnetic force on the electron.

20. A copper wire of uniform area of cross-section of 1.54 x10 -6 m2 carries a current of 3.08 A. Calculate the electric field inside the wire if the resistivity of copper is 1.724X10-8 Ω m.
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