Have you observed the following things?i. Old iron bars in the builth

1.	Have you observed the following things?i. Old iron bars in the builthngs.ii. Copper vessels not cleaned for a long time.
Answer» i. When old iron bars in the buildings are exposed to moist air for a long time, they acquire a coating of browm nlaky substance called rust. (Fe₂O₃.H₂O) ii. If copper vessels are not cleaned for a long time, they react with moist carbon dioxide in the air, lose their shine and gain a green coat of copper carbonate. (CuCO₃)

Have you observed the following things?i. Old iron bars in the builthngs.ii. Copper vessels not cleaned for a long time.

Answer»

i. When old iron bars in the buildings are exposed to moist air for a long time, they acquire a coating of browm nlaky substance called rust. (Fe₂O₃.H₂O)

ii. If copper vessels are not cleaned for a long time, they react with moist carbon dioxide in the air, lose their shine and gain a green coat of copper carbonate. (CuCO₃)

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Have you observed the following things?i. Old iron bars in the builthngs.ii. Copper vessels not cleaned for a long time.

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