MCQOPTIONS
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| 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 | |