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What is crystallization ? How do you mak...

What is crystallization ? How do you make crystallization of copper sulphate?

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NCERT TELUGU-CHANGS AROUND US-EXERCISE
  1. What is a physical change ? What are its properties?

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  2. What is rust and rusting? Why does iron rust ? What type of a change i...

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  3. What is crystallization ? How do you make crystallization of copper su...

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  4. Explain the following chemical changes : a) A piece of magnesium wire ...

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  5. Explain the following chemical changes : An iron nail is dropped in a ...

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  6. Explain the following chemical changes : Baking soda is added to vineg...

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  7. Write the reactions and give reasons: Carbondioxide gas in bubbled thr...

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  8. What are the differences between physical and chemical changes ?

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  9. Draw a diagram of the activity you perform to observe the reaction bet...

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  10. Draw a diagram of the activity you perfom to observe changes in water ...

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  11. Digestion of food is achange:

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  12. Fill in the blanks in the following statements. The chemical name of v...

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  13. Iron, in the presence of oxygen and moisture gets rusted after long ti...

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  14. The process of depositing a layer of zinc on iron is called:

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  15. A very fast reaction:

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  16. The rust on an iron article is chemically known as:

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  17. The colour of the coating formed on copper vessels when oxygen reacts ...

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  18. Vitamin C is chemically known as:

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  19. The colour of copper sulphate solution-

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  20. When water is added to magnesium oxide (ash), the substance formed is:

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