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Question 38Asked in RRB JE CBT-1, 19 Feb 2026, Shift 2 (12:45 PM)

Which observation best supports the statement that humans have double circulation of

Which observation best supports the statement that humans have double circulation of blood?
  1. ABlood passes through the heart twice in one complete circulation
  2. BBlood flows only once through the heart in one complete cycle
  3. CRight side of the heart pumps oxygenated blood
  4. DOxygenated and deoxygenated blood mix in the heart
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Correct answer: (A) Blood passes through the heart twice in one complete circulation

From RRB JE CBT-1 PYQ 19 Feb 2026, Shift 2 (12:45 PM)

This is question 38 of RRB JE CBT-1 PYQ 19 Feb 2026, Shift 2 (12:45 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.