CLASS X, SCIENCE S.A. II, REVISION QUESTION PAPER.

SHELFORD TUTORIALS

SCIENCE, SA - II

1.  Why is refractive index of atmosphere different at different altitudes?[01]
2.   Name the functional group present in C3H6O.[01]
3.   What is the value of near point of distinct vision of normal eye?[01]
4.   what is vasectomy?[01]
5.    A boy uses spectacles of focal length -60 cm. Name the defect of vision he is suffering from.
      Which lens is used for the correction of this defect? Compute the power of this lens.[2]
6.   State two reason for probation of pre-natal sex determination? [2]
7.   What were the demerits of Newlands’ law of octaves.[2]
8.   Write the trend of atomic size and metallic character along a group and period in modern
       periodic table.[2]
9.   What are the factors responsible for evolution.[2]
10. What is refractive index? Define absolute refractive index.[2]
11. Draw ray diagram for an object placed between focus and pole for a concave mirror.[2]
12. Where is epididymis present? What is its function?[2]
13. Draw a diagram of pollen grain germinating on stigma.[2]
14. a)  State  Snell’s  law.  b)  Why  is  convex  mirror  used  as  rear  view  mirrors?  Write
     characteristics of image formed by convex mirror.[3]
15. What is pollination? List its types. State two agents which help in pollination. [3]
16. State function of – ovary, fallopian tube, uterus. [3]
17. a) Define heredity. b) Differentiate between inherited traits and acquired traits. [3]
18. How does the tendency to gain electrons change as we go down the 3rd period of modern periodic
     table. [3]
19. A doctor has prescribed a corrective lens of power +1.5D. Find the focal length of the lens.
      Is the prescribed lens diverging or converging. [3]
20. Draw electron dot structure of chloromethane; 1,1,1-trichloroethane.
21. Carbon is present in atmosphere is less concentration, but how does it forms large number of
     compounds with other elements. [3]
22. name three STD. [3]
23. Draw a neat and labelled diagram of male reproductive system and label on it the following
      parts – prostate gland, seminal vesicle, and testis. State the functions of labelled parts.[5]
24. How  will  you  distinguish  chemically  between  ethanol  and  ethanoic  acid?  What  is
       esterification reaction? Differentiate between addition and substitution reactions?[5]
25. A convex mirror used for rear-view on an automobile has a radius of curvature of 3.00 m. if a
      bus is located at 5.00 m from this mirror. Find the position, nature and size of image.[5]

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