Match the transformations in column $I$ with appropriate options in column $II$.
Column $I$ Column $II$
$A$. $CO_{2(s)} \rightarrow CO_{2(g)}$ $p$. phase transition
$B$. $CaCO_{3(s)} \rightarrow CaO_{(s)} + CO_{2(g)}$ $q$. allotropic change
$C$. $2H_{(g)} \rightarrow H_{2(g)}$ $r$. $\Delta H$ is positive
$D$. $P_{(\text{white, solid})} \rightarrow P_{(\text{red, solid})}$ $s$. $\Delta S$ is positive
$t$. $\Delta S$ is negative

  • A
    $A$ $\rightarrow p, r, s; B$ $\rightarrow r, s; C$ $\rightarrow t; D$ $\rightarrow p, q, t$
  • B
    $A$ $\rightarrow p, r, t; B$ $\rightarrow p, q; C$ $\rightarrow s; D$ $\rightarrow p, r, s$
  • C
    $A$ $\rightarrow p, q, r; B$ $\rightarrow p, s; C$ $\rightarrow p; D$ $\rightarrow p, q, r$
  • D
    $A$ $\rightarrow r, s, t; B$ $\rightarrow r, t; C$ $\rightarrow r; D$ $\rightarrow p, s, t$

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