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Answer the following : How does lightni...

Answer the following :
How does lightning improve the fertility of soil and helps produce ozone gas?

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  1. Use your brain power! What kind of damage is caused by a lightning ...

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  2. Use your brain power! What measures will you take to prevent the da...

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  3. Answer the following : How does lightning improve the fertility of so...

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  4. Give reasons : Repulsion is used as a test for identifying an electri...

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  5. Give reasons : When a bottle containing mustard seeds shaken vigorous...

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  6. Give reasons : Use your brain power! : Why does a charged balloon st...

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  7. Give reasons : Explain why it is not safe to go out with an umbrella ...

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  8. Give reasons : Why do farmers stick an iron staff into the ground whi...

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  9. Answer the following question in short : Why is lightning not seen e...

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  10. Use your brain power! Why is the upper end of the lightning conduct...

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  11. Give reasons : Use your brain power! : Why are coal and salt added t...

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  12. Do you have experience of the instances given below? : A plastic comb...

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  13. Do you have experience of the instances given below? : A plastic comb...

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  14. Rub one end of a glass rod against a silk cloth. Due to the rubbing a ...

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  15. Now take plastic rod. Rub one of its ends against a woollen cloth. Bri...

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  16. Refer the materials and procedure given on textbook page no. 52. Recor...

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  17. Refer the apparatus and procedure given on textbook page no. 53. Rcord...

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  18. To charge an object by contact. : Rub a plastic comb against paper. T...

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  19. To charge an object by induction. : Rub a comb or a balloon on your h...

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  20. Keep a spent tubelight in a dark place. Rub it vigorouly with a thin p...

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