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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Rust is
विकल्प
hydrated iron oxide
hydrated copper sulphate
anhydrous iron oxide
none of the above
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उत्तर
hydrated iron oxide
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| Column I | Column II | ||
| (a) | Weather cock | (i) | Gases and fine dust particles |
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