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Question
Chemistry
Mien borax is heated dining borax bead test along with CoO (Cobalt Oxide) on a loop of platinum (Pt) wire, it swells up and produces a blue colored bead. Which of the following compounds is responsible for the blue color?
Q. \Mien borax is heated dining borax bead test along with CoO (Cobalt Oxide) on a loop of platinum (Pt) wire, it swells up and produces a blue colored bead. Which of the following compounds is responsible for the blue color?
2196
211
TS EAMCET 2018
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A
Pt
(
BO
X
2
)
X
4
2%
B
CO
(
BO
X
2
)
X
3
27%
C
CO
(
BO
X
2
)
X
2
63%
D
NaBO
X
2
8%
Solution:
Correct answer is (c)
CO
(
BO
X
2
)
X
2