MCQ
Which has the minimum freezing point
- AOne molal $NaCl$ solution
- BOne molal $KCl$ solution
- ✓One molal $CaC{l_2}$ solution
- DOne molal urea solution
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Statement $I:$ Iron $(III)$ catalyst, acidified $K _{2} Cr _{2} O _{7}$ and neutral $KMnO _{4}$ have the ability to oxidise $I$ to $I _{2}$ independently.
Statement $II$: Manganate ion is paramagnetic in nature and involves $p \pi- p \pi$ bonding.
In the light of the above statements, choose the correct answer from the options.
${A_2}B(g) \to {A_2}(g) + B(g);\,\,\,\Delta {H^o} = 40\,kJ/mol$
${A_2}B(g) \to A(g) + AB(g);\,\,\,\Delta {H^o} = 50\,kJ/mol$
.....$ kJ/mol$