MCQ
Vitamin $B_1$ is known as:
- AAscorbic acid
- BCarotenoids
- ✓Thiamine
- DPyridoxine
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$(I)$ $CrO_4^{2-}$
$(II)$ $MnO_4^-$
$(III)$ $Cr_2O_7^{2-}$ ?
Total sum of oxygen atoms in Product $A$ and Product $B$ are .........
(Molecular mass of $CHCl_3 = 119.5 \,u$ and molecular mass of $CH_2Cl_2 = 85\, u$)

In which case the value of $\Delta H_{sol.} < 0$