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Chemistry
Which of the following compounds is used as a starting material for the preparation of potassium dichromate?
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Q. Which of the following compounds is used as a starting material for the preparation of potassium dichromate?
JIPMER
JIPMER 2015
The d-and f-Block Elements
A
$K_2SO_4.Cr_2(SO_4)_3.24H_2O \,$ (Chrome alum)
28%
B
$PbCrO_4 $ (Chrome yellow)
12%
C
$FeCr_2O_4 $ (Chromite)
56%
D
$PbCrO_4.PbO$ (Chrome red)
4%
Solution:
Potassium dichromate is prepared from chromite, $FeCr_2O_4$ ore.