9th Standard English Medium Science Subject Book Back 3 Mark Questions with Solution Part - II

9th Standard

    Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 45
    15 x 3 = 45
  1. Write the need of a standard unit

  2. A 900 kg car moving at 10 ms-1 takes a turn around a circle with a radius of 25 m. Determine the acceleration and the net force acting upon the car.

  3. What is an adsorbate and adsorbent?

  4. State the law of multiple proportions

  5. Outline the flow charts of Phylum Chordata.

  6. Sanjana wants to buy a jam bottle in a grocery shop. What are the things she should observe on the label before purchasing it

  7. Why do people prefer wearing white clothes during summer?

  8. How much heat energy is required to melt 5 kg of ice? (Specic latent heat of ice = 336 Jg-1)

  9. Calculate the amount of charge that would flow in 2 hours through an element of an electric bulb drawing a current of 2.5A.

  10. State Faraday’s laws of electromagnetic induction.

  11. Explain Octet rule with an example.

  12. When does the acid rain occur?

  13. Mention the most abundant muscular tissue found in our body.State its function

  14. Differentiate the following terms:
    a. Excretion and secretion
    b. Absorption and assimilation
    c. Sperm and ovum
    d. Ingestion and egestion
    e. Diphyodont and heterodont
    f. Incisors and canines

  15. What is meant by supersonic speed?

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