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Science · 2025 · 3 marks
CBSE 2025 · Region 6 · Set 1 · Q29
Name the blood vessel that brings (i) oxygenated blood (ii) deoxygenated blood, to the human heart. Also name that chamber of the heart which…
Name the blood vessel that brings (i) oxygenated blood (ii) deoxygenated blood, to the human heart. Also name that chamber of the heart which receives deoxygenated blood and state how deoxygenated blood from this chamber is sent to lungs for oxygenation.
Marking-scheme solution
(i) Pulmonary vein
(ii) Vena cava
Right atrium
After receiving blood, the right atrium contracts
As a result blood passes into the right ventricle
-Then the ventricle contracts and the deoxygenated blood flows into the lungs through pulmonary artery.
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CBSE Class 10 Science past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.