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In 4R principle what is the full form of...

In 4R principle what is the full form of 4R's

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NCERT TELUGU-Changes Around Us-IMPROVE YOUR LEARNING :
  1. In 4R principle what is the full form of 4R's

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  2. Why do we paint wooden doors and windows?

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  3. Some deposits were observed in water preserved in Aluminium containers...

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  4. When a candle is burnt, what type of changes take place? Give another ...

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  5. How is an iron gate prevented from rusting?

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  6. Between Coastal and dry land areas, where is rusting of iron objects i...

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  7. Classify the changes involved in the following processes as Physical, ...

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  8. Classify the changes involved in the following processes as Physical, ...

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  9. Classify the changes involved in the following processes as Physical, ...

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  10. Classify the changes involved in the following processes as Physical, ...

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  11. Classify the changes involved in the following processes as Physical, ...

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  12. Classify the changes involved in the following processes as Physical, ...

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  13. Classify the changes involved in the following processes as Physical, ...

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  14. Which of the following processes are chemical changes? Give reasons. ...

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  15. Which of the following processes are chemical changes? Give reasons. ...

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  16. Which of the following processes are chemical changes? Give reasons. ...

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  17. Which of the following processes are chemical changes? Give reasons. ...

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  18. Which of the following processes are chemical changes? Give reasons. ...

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  19. Which of the following processes are chemical changes? Give reasons. ...

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  20. Which of the following processes are chemical changes? Give reasons. ...

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  21. Identify the incorrect statement among the following

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