MCQ
Which of the following combination does not evolve $Cl_2$ gas?
- A$HCl(aq.) + KMnO_4$
- B$HCl + MnO_2$
- C$HCl + Br_2$
- ✓$HCl + F_2$

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Which of the following is correct about product $'X'$ ?
How many moles of $Sn^{2+}$ will be oxidized by $1\, mol \,Cr_2O_7^{2-}$ into $Sn^{4+}$ ?