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प्रश्न
What do you observe when?
Scrap zinc is heated with conc. HNO3?
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उत्तर
When scrap zinc is heated with conc, HNO3 formation of zinc nitrate, water and nitrogen dioxide will occur.
\[\ce{Zn + 4HNO3 -> Zn(NO3)2 + 2H2O + 2NO2}\]
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