

MCQOPTIONS
Saved Bookmarks
1. |
When \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] is converted to \[{{K}_{2}}Cr{{O}_{4}},\] the change in the oxidation state of chromium is [NCERT 1981] |
A. | 0 |
B. | 6 |
C. | 4 |
D. | 3 |
Answer» B. 6 | |