MCQ
When $S{n^{2 + }}$changes to $S{n^{4 + }}$in a reaction
- ✓It loses two electrons
- BIt gains two electrons
- CIt loses two protons
- DIt gains two protons
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| $List-I$ | $List-II$ |
| $(A)$Glucose $+ HI$ | $(I)$ Gluconic acid |
| $(B)$Glucose $+ Br _{2}$ water | $(II)$ Glucose pentacetate |
| $(C)$Glucose $+$ acetic anhydride | $(III)$ Saccharic acid |
| $(D)$Glucose $+ HNO _{3}$ | $(IV)$ Hexane |
Choose the correct answer from the options given below.

$RCH_2OH + PCC [ C_5H_5NH^+ ClCrO^-_3] \to$
