वह अभिक्रिया जिसमें $\Delta H > \Delta U$ है,वह है

• A
  $N_{2(g)} + 3H_{2(g)} \rightarrow 2NH_{3(g)}$
• B
  $CH_{4(g)} + 2O_{2(g)} \rightarrow CO_{2(g)} + 2H_2O_{(l)}$
• C
  $N_{2(g)} + 2O_{2(g)} \rightarrow 2NO_{2(g)}$
• D
  $CaCO_{3(s)} \rightarrow CaO_{(s)} + CO_{2(g)}$