HNO3 + 2H2 SO4    =    H2O++ NO2+ + + 2HSO4- - এই বিক্রিয়ায়  HNO3 কী?

Created: 3 months ago | Updated: 1 month ago

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Created: 3 months ago | Updated: 1 month ago
Created: 3 months ago | Updated: 1 month ago