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Why do we apply paint on iron articles ?...

Why do we apply paint on iron articles ?

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To prevent the exposure of iron articles to air and moisture , thereby preventing corrosion.
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(i) Solid calcium oxide was taken in a container and water was added slowly to it : (a) Write the observation . (b) Write the chemical formula of the product formed (ii) What happens when carbon dioxide gas is bubbled through lime water : (a) In small amount , (b) In excess? (iii) Why do you apply paint on iron articles ?

(a) Write one equation each for decomposition reaction when energy is supplied in the form of : (i) heat , (ii) light. (b) Account for the following : (i) Paint is applied on iron articles. (ii) Oil and fat containing food items are flushed with nitrogen . (iii) When an iron nail kept in copper sulphate solution, blue colour of the solution fades and iron nail becomes brownish .

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OSWAAL PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS-NCERT CORNER (Textbook Exercises)
  1. Which of the statements about the reaction below are incorrect ? 2Pb...

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  2. Fe(2)O(3)+2Al to Al(2)O(3)+2Fe. The above reaction is an example of ...

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  3. What happens when dilute hydrochloric acid is added to iron fillings ?...

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  4. What is a balanced chemical equation ? Why should a chemical equation ...

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  5. Translate the following statements into chemical equations and then ba...

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  6. Balance the following chemical equation. (a) HNO(3)+Ca(OH)(2)rarrCa(...

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

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  8. Write the balanced chemical equation for the following and identify ...

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  9. What does one mean by exothermic and endothermic reactions ? Give exam...

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  10. Why is respiration considered an exothermic reaction ? Explain.

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  11. Why are decomposition reactions called the opposite of combination rea...

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  12. Write one equation for decomposition reactions where energy is supplie...

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  13. What is the difference between displacement and double displacement re...

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  14. In the refining of silver, the recovery of silver from silver nitrate ...

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  15. What do you mean by a precipitation reaction ? Explain by giving examp...

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  16. Explain the following in terms of gain or loss of oxygen with two exam...

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  17. A shiny brown -coloured elemnt 'X' on heating in air becomes black in ...

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  18. Why do we apply paint on iron articles ?

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  19. Oil and fat containing food items are flushed with nitrogen. Why ?

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  20. Explain the following terms with one example each . (a) Corrosion ...

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