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Why should we use cloth bags instead of ...

Why should we use cloth bags instead of polythene bags?

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NCERT TELUGU-AIR, WINDS AND CYCLONES-EXERCISE
  1. Food sometimes enters the wind pipe and causes choking. How does it ha...

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  2. Pests are not controlled by the pesticides. Why does this happen?

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  3. Why should we use cloth bags instead of polythene bags?

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  4. Why did this happen ?

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  5. A capillary tube immersed in water is kept in an ascending lift whose ...

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  6. What happens to air on heating it?

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  7. What happens to the weight of a body when it is charged positively?

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  8. What is a cyclone ? What are the other names for it ?

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  9. How can you prepare a base by doing a simple experiment ?

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  10. Do winds cause harm ? Explain.

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  11. What are the post cyclone measures we have to take ?

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  12. What factors contribute to cyclone ? When and where do they likely to ...

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  13. What are the effects of cyclone ? On what factors the destruction of a...

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  14. List the types of clothes we wear in different seasons.

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  15. Explain different measures to take care after cyclone.

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  16. Ram wanted to know about air and its pressure. What questions may aris...

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  17. Describe different types of winds.

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  18. Compare the duration of days in December and May months with the help ...

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  19. State two experiences that make you think that air exerts pressure.

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  20. What happens to air on heating it?

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