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Mention any two impurities present in hy...

Mention any two impurities present in hydrogen prepared in laboratory.

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ICSE-STUDY OF THE FIRST ELEMENT - HYDROGEN-EXERCISE 6(B)
  1. For laboratory preparation of hydrogen, give the following: chemica...

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  2. For laboratory preparation of hydrogen, give the following: fully-l...

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  3. Mention any two impurities present in hydrogen prepared in laboratory.

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  4. How are these impurities removed ?

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  5. Which test should be made before collecting hydrogen in a gas jar?

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  6. Why is nitric acid not used in the preparation of hydrogen?

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  7. Why is hot concentrated sulphuric acid not used in the preparation of ...

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  8. Hydrogen is prepared by Bosch process ? Write the balanced equations...

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  9. Hydrogen is manufactured by Bosch Process'. How can you obtain hydr...

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  10. Write balanced equations for the following reactions. Steam is passe...

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  11. Write equations for the reactions of (i) iron with steam (ii) calc...

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  12. A small piece of calcium metal is put into a small trough containing w...

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  13. A small piece of calcium metal is put into a small trough containing w...

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  14. A small piece of calcium metal is put into a small trough containing w...

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  15. Thin sprips of magnesium, copper and iron are taken. Write down what...

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  16. Thin sprips of magnesium, copper and iron are taken. Arrange these m...

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  17. Hydrogen is evolved by the action of cold dil. HNO3, on

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  18. Which metal produces hydrogen gas on reaction with cold water? (a) A...

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  19. The composition of the nucleus of deutrium is

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  20. Elements which show unique nature in the preparation of hydrogen are ...

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