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7th Standard English Medium Science Subject Book Back 3 Mark Questions with Solution Part - I Question Bank Software Jun-17 , 2021

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7th Standard English Medium Science Subject Book Back 3 Mark Questions with Solution Part - I

7th Standard English Medium Science Subject Book Back 3 Mark Questions with Solution Part - I

7th Standard

    Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 45
    15 x 3 = 45

  1. Define the density of objects.

  2. Distinguish between speed and velocity.

  3. Define molecule.

  4. What are isotones? Give one example.

  5. What is cross pollination?

  6. What steps you will follow to keep the Teeth healthy?

  7. Why do we use Mercury in thermometers? Can water be used instead of mercury? What are the problems in using it?

  8. Define an electric current.

  9. Distinguish physical and chemical changes.

  10. Distinguish between the following pairs Smooth ER and Rough ER Cell wall and cell membrane Chloroplast and mitochondria

  11. Write the levels of classification.

  12. Draw a diagram of a pin hole camera showing the rays of light passing between the Object and its image.

  13. Name the four different types of galaxies.

  14. How do plastics impact animals and the environment?

  15. Why do antiseptics differ from disinfectants? Give one example of each.

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