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Per NCERT, what does the law of constant proportions imply about WATER (H₂O) from different sources (e.g. rain, river, ocean)?
APure water from any source has the SAME ratio of hydrogen to oxygen by mass (1:8)
BWater can have any random composition
CWater from different sources has different H:O ratios
DThe proportions vary with location
Answer & Solution
Correct answer: A. Pure water from any source has the SAME ratio of hydrogen to oxygen by mass (1:8)
Per NCERT §9.2, pure water = always H:O = 1:8 by mass (regardless of source). The other options contradict the law.
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