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What happens when a piece of : (a) zin...

What happens when a piece of :
(a) zinc metal is added to copper sulphate solution ?
(b) aluminium metal is added to dilute hydrochloric acid ?
Write chemical equations involved.

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DINESH PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS -Short Answer Questions
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  2. A silver article generally turns black when kept in the open for a few...

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  3. What happens when a piece of : (a) zinc metal is added to copper sul...

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  4. (a) What is meant by a chemical reaction ? Explain with the help of an...

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  5. Write balanced chemical equations for the following reactions : (i) ...

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  6. "Oxidation and reduction processes occur simultaneously". Justify the ...

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  7. Write the balanced chemical equations for the following reactions and ...

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  8. Write the balanced chemical equations for the following reactions and ...

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  9. Complete the missing components/variables given as x and y in the foll...

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  10. Which among the following changes are exothermic or endothermic in nat...

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  11. Identify the reducing agent in the following reactions. (a) 4NH(3)+...

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  12. Identify the oxidising agent (oxidant) in the following reactions {:...

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  13. write the balanced chemical equations for the following reaction. (a...

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  14. A solution of potassium chloride when mixed with silver nitrate soluti...

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  15. Ferrous sulphate decomposes with the evolution of a gas having a char...

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  16. Why do fire flies glow at night?

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  17. Grapes hanging on the plant do not ferment but after being plucked fro...

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  18. Which among the following are physical or chemical changes? (a) Eva...

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  19. During the reaction of some metals with dilute hydrochloric acid, foll...

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  20. A substance X, which is an oxide of a group 2 element, is used intensi...

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