Potassium dichromate is prepared fromA. chromate obtined by the fusion of chromite ore with sodium carbonate in free access of airB. pyrolusite which is fused with potassium hydroxide in th presence of airC. iron pyrites by the fusion with potassium carbonate in presence of moistureD. none of these

Potassium dichromate is prepared fromA. chromate obtined by the fusion

1.	Potassium dichromate is prepared fromA. chromate obtined by the fusion of chromite ore with sodium carbonate in free access of airB. pyrolusite which is fused with potassium hydroxide in th presence of airC. iron pyrites by the fusion with potassium carbonate in presence of moistureD. none of these
Answer» Correct Answer - A `underset("Chromite ore")(4FeCr_2O_4)+8Na_2Xo_3+7O_2tounderset("(yellow)")underset("Sodium chriomate")(8Na_2CrO_4)+2Fe_2O_3+8CO_2` `2Na_2CrO_4+2H^(+)toNa_2Cr_2O_7+2Na^(+)+H_2O` `Na_2Cr_2O_7+2HCI to underset("dichromate")underset("Potassium")(K_2Cr_2O_7)+2NaCl`

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Potassium dichromate is prepared fromA. chromate obtined by the fusion of chromite ore with sodium carbonate in free access of airB. pyrolusite which is fused with potassium hydroxide in th presence of airC. iron pyrites by the fusion with potassium carbonate in presence of moistureD. none of these

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