0.4 Weave a story with the given outline in about 150-200 words. A young man setting out on a journey -accompanied by an old man-they part under a pipal tree-young man asks old man to keep Rs.100 for him till he returns-old agrees and takes money-old man says he never gave him any money
Answers
Answer:
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QUESTION
A metal ‘X’ acquires a green colour coating on its surface on exposure to air.
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ANSWERS"
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(i)Identify the metal ‘X’ and name the process responsible for this change.
Ans . metal 'X'is a copper.
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(ii) Name and write chemical formula of the green coating formed on the metal.
Ans .This lead to corrosion of cu metal by formation of green coating.
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(iii) List two important methods to prevent the process.
Ans. 1. we should apply grease on the surface of metal time to time.
2. we should apply paint on the surface of metal.
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hope it helps you
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