why is it necessary to clean the rods with sand papers before dipping them into the liquids
Answers
Answer:
Hello,
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Explanation:
According to me,
Let's take an example of magnissium ribbon/rod then firstly have to clean it with sand paper because when magnessium rod get contact in air which contains particles of water(moisture) or O2 gas which convert magnessium rod into magnessium oxide .
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Answer:
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Explanation:
Because if we would directly dip them into liquids then a thin layer of the particular liquid will get stored all over the rod causing it to get corroded easily and after corrosion and rusting due to the phenomenon of oxidation it will be of no use and a perfect example of this yoy would see in class 9 ncert magnesium ribbon rod case