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Water from a river, a well and a tap all give hydrogen and oxygen in the mass ratio:
A1 to 6
B1 to 8
C1 to 4
D1 to 2
Answer & Solution
Correct answer: B. 1 to 8
1. A compound always holds its elements in fixed proportion.
2. In water the hydrogen to oxygen mass ratio is fixed.
3. That ratio is 1 to 8.
_Source: syllabus Science Class IX, Chapter 3, Atoms and Molecules._
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