MCQ
Most reactive towards $EAR$
- A

- B

- ✓

- D






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Statement $(I)$ : $A$ Buffer solution is the mixture of a salt and an acid or a base mixed in any particular quantities.
Statement $(II)$ : Blood is naturally occurring buffer solution whose $\mathrm{pH}$ is maintained by $\mathrm{H}_2 \mathrm{CO}_3 / \mathrm{HCO}_3$ concentrations.
In the light of the above statements, choose the correct answer from the options given below.
$C_{(graphite)} + CO_{2(g)} \rightarrow 2CO _{(g)}$
are $170\, kJ$ and $170\, J K^{-1},$ respectively. This reaction will be spontaneous at ............ $\mathrm{K}$