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The heart has separate chambers to stop which two bloods mixing?
ARich and spent
BRich and stored
CRaw and spent
DRaw and stored
Answer & Solution
Correct answer: A. Rich and spent
1. One carries oxygen, the other carbon dioxide.
2. Mixing would waste the oxygen.
3. Oxygen-rich and carbon dioxide-rich blood are kept apart.
_Source: NCERT Class 10 Science, Ch 6 'Life Processes'_
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