SHELFORD TUTORIALS
SCIENCE, SA - II
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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