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Write the reaction in which hydrogen act...

Write the reaction in which hydrogen acts as a reducing agent.

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`CuO +H_(2) to Cu+H_(2)O`
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KUMAR PRAKASHAN-CHEMICAL REACTIONS AND EQUATIONS -OBJECTIVE QUESTIONS AND ANSWERS (Answer the following questions in one word )
  1. Name the gas evolved when lead nitrate is heated.

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  2. Write the example of decomposition reaction which occurs in nature.

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  3. Write the name of chemical used in black and white photography.

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  4. Which ions are present in barium sulphate ?

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  5. Mention one use of quick lime.

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  6. Give one example of decomposition reaction in which solid and gas are ...

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  7. Give an example of antioxidant.

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  8. Write the reaction in which hydrogen acts as a reducing agent.

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  9. Name the reaction in which two compounds exchange their ions to form t...

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  10. What would be the effect on lime water, when carbon dioxide gas is pas...

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  11. State the molecular formula and chemical name of iron (III) oxide.

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  12. State different forms of energy required for breaking down the molecul...

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  13. What does (II) indicate in iron (II) oxide ?

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  14. Give two examples of noble metals.

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  15. Mention two examples of exothermic reactions.

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  16. When does the breaking and forming of bonds of chemical substances tak...

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  17. Name the reaction which forms insoluble salts.

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  18. Write the formula for two oxides of sulphur.

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  19. Identify the type of reaction for the following reaction : 2KClO(3)(...

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  20. On immersing an iron nail in CuSO(4) solution for few minutes, what wi...

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