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Section D (Assertion-Reason)
The following questions consist of two statements. Mark the answer as follows.
(a) If both statements are CORRECT, and Statement II is the CORRECT explanation of Statement I.
(b) If both statements are CORRECT, and Statement II is NOT the CORRECT explanation of Statement I.
(c) If Statement I is CORRECT, but Statement II is INCORRECT.
(d) If Statement I is INCORRECT, but Statement II is CORRECT.
Statement I: On cooling in a freezing mixture, the colour of the following mixture turns to pink from deep blue for the reaction:
\( \mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}^{2+} \) (aq.) \( +4 \mathrm{Cl}^{-} \)(aq. \( ) \rightleftharpoons \)
Blue
Pink
Statement II: The reaction is endothermic.
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