Chemistry - Chemical Equilibrium Question with Solution | TestHub

N₂O₄ ⇌ 2NO₂ increases the number of moles, so the average molar mass falls below 92, (a) is correct CaCO₃(s) ⇌ CaO(s) + CO₂(g) increases gaseous moles, so high pressure opposes it, (b) is incorrect

Water to ice has an increase in volume, so high pressure opposes freezing, (c) is incorrect

H₂ → 2H is endothermic, so high temperature favours it, (d) is correct

The correct options are (a) and (d).