AIIMS 2018 Chemistry Allotropes of Phosphorus MCQ Question

Option A is incorrect because red phosphorus (Red P) is not considered toxic; it is relatively safe compared to white phosphorus (White P), which is highly toxic and can cause severe health issues upon exposure. Option B is correct as white phosphorus is indeed highly soluble in carbon disulfide (CS₂), while option C is accurate since black phosphorus is the most thermodynamically stable allotrope of phosphorus. Option D is also true, as white phosphorus reacts with sodium hydroxide (NaOH) to produce phosphine (PH₃) and other products, demonstrating its reactivity in basic conditions.