With Cr2O3, color of the bead in sodium carbonate-bead test is :
A
red
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B
blue
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C
yellow
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D
green
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Solution
The correct option is B yellow Option (C) is correct. With Cr2O3, color of the bead in sodium carbonate-bead test is yellow. 2Cr2O3 + 4Na2CO3+3O2→4Na2CrO4+4CO2↑