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Complete and balance the following react...

Complete and balance the following reactions.
`Zn + NaOH to` __________ + _________

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`Zn+2NaOH to Na_2ZnO_2 + H_2`
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ICSE-STUDY OF THE FIRST ELEMENT - HYDROGEN-TOPIC 1 Hydrogen and its Laboratory Preparation (5 MARK QUESTIONS)
  1. Which metal is preferred for preparation of hydrogen from water?

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  2. Why Zinc and aluminium are considered to have unique nature. Give bala...

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  3. For laboratory preparation of hydrogen, give the following: materi...

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  4. For laboratory preparation of hydrogen, give the following: method ...

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  5. For laboratory preparation of hydrogen, give the following: chemica...

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  6. For laboratory preparation of hydrogen, give the following: a) mate...

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  7. Name the impurities present in hydrogen prepared in the laboratory.

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  8. Name the impurities present in hydrogen prepared in the laboratory. W...

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  9. Complete and balance the following reactions. Na + H2 O to +

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  10. Complete and balance the following reactions. Ca + H2 O to +

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  11. Complete and balance the following equation : Mg +H2 O to

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  12. Complete and balance the following reactions. Zn + H2 O to +

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  13. Complete and balance the following equation : Fe + H2 O

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  14. Complete and balance the equations . Zn+2HCl to ……….. + ………..

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  15. Complete and balance the following reactions. Al + H2 SO4 to +

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  16. Complete and balance the following reactions. Fe + HCl to +

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  17. Complete and balance the following reactions. Zn + NaOH to +

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  18. Complete and balance the following reactions. Al+KOH + H2O to +

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  19. Write down what happens when iron, copper and magnesium metals are ad...

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  20. Arrange these metals in descending order of reactivity Fe,Zn,Na,Cu,A...

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