MCQ
Iodine is released when potassium iodide reacts with
- A$ZnS{O_4}$
- ✓$CuS{O_4}$
- C$FeS{O_4}$
- D${(N{H_4})_2}S{O_4}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Assertion $(A)$ : Vinyl halides do not undergo nucleophilic substitution easily.
Reason $(R)$ : Even though the intermediate carbocation is stabilized by loosely held $p-$ electrons, the cleavage is difficult because of strong bonding.

$(I)$ $CrO_4^{2-}$
$(II)$ $MnO_4^-$
$(III)$ $Cr_2O_7^{2-}$ ?
