A. Acid rain
B. Sea water
C. Rain water
D. None of these
🧠 Explanation:
The purest form of water is rainwater, as it is naturally distilled during the water cycle, free from most contaminants found in surface or groundwater. Collected before it touches the ground, rainwater lacks minerals and pollutants, making it ideal for scientific and industrial uses. However, it may still contain atmospheric impurities. Its purity is critical in applications like laboratory experiments or sensitive manufacturing. Understanding rainwater’s properties aids in water management and environmental studies, highlighting the importance of natural processes in providing clean water resources.
