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Science · 2023 · 1 mark
CBSE 2023 · Region 5 · Set 1 · Q19
Assertion (A): The walls of atria are thicker than those of the ventricles. Reason (R): Ventricles have to pump blood into various organs at high…
Assertion (A) : The walls of atria are thicker than those of the ventricles.
Reason (R): Ventricles have to pump blood into various organs at high pressure.
Official answer
(D)
Assertion (A) is false, but Reason (R) is true.
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CBSE Class 10 Science past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.