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Read carefully the passage and select the correct answer from the given four option of the questions:An orange solid (A) on heating gave a green residue (B), a colourless gas (C) and water vapour. The gas(C) on passing over heated Mg gave white solid (D) which on reaction with water gave a gas (E). The gas (E) forms white fumes with HCl.The green residue (B) has the formula.(a) Cr2O3(b) CrO2(c) CrO3(d) CrO5 |
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Answer» Answer (c) CrO3 |
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