SELECT * FROM question_mgmt as q WHERE id=6003 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=11 AND subId=16 AND chapterId=466 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 7th science Physical and Chemical Changes explain how painting of an iron gate prevents it f

Question:

Explain how painting of an iron gate prevents it from rusting.

Answer:

Painting prevents rusting of iron. The process of depositing a layer of zinc on iron called galvanization. Painting prevents iron from the moisture and oxygen present in the air. When iron comes in contact with the oxygen and the moisture from the environment. it gets oxidised and makes ferric oxide (Fe2O3). 

 


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SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='11' AND subId='16' AND ex_no!=0 AND status=1 and id!=6003 ORDER BY last_viewed_on desc limit 0,10

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  • 4 months ago

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  • Answered by Ekta Mehta
  • 4 months ago

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  • Answered by Ekta Mehta
  • 4 months ago

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