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Concentrated sulphuric acid cannot be us...

Concentrated sulphuric acid cannot be used in the laboratory perparation of dihydrogen-why?

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CHHAYA PUBLICATION-HYDROGEN-WARM UP EXERCISE
  1. Although Fe is placed above hydrogen in the electrochemical series, di...

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  2. Why commercial variety of zinc is used instead of pure zinc in the lab...

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  3. Concentrated sulphuric acid cannot be used in the laboratory perparati...

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  4. Name a metal and a non-metal which on reaction with alkali liberates d...

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  5. Give an example and formula of a compound which on electrolysis libera...

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  6. Name two metals which can replace hydrogen from acid.

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  7. How can one prepare H(2) gas from water by using a reducing agent?

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  8. Write the industrial preparation of dihydrogen from water.

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  9. Explain why dihydrogen is relatively inert at room temperature.

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  10. Give example of two reaction one in which H(2) acts as on oxidising ag...

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  11. What do you mean by hardening of oils?

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  12. Show that the reactivity of halogens towards dihydrogen decreases on g...

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  13. Name two compounds, in one of which hydrogen is in + 1 and in the othe...

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  14. Explain why the chemical properties of ortho and para-hydrogen are the...

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  15. What is nascent hydrogen?

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  16. Show that nascent hydrogen is more active than ordinary molecular hydr...

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  17. What do you mean by atomic hydrogen?

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  18. Both dihydrogen and carbon monoxide burn in air with blue flame. How w...

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  19. Mention two advantages of using dihydrogen as a fuel with respect to g...

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  20. Mention four important uses of dihydrogen.

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