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Blood and Circulatory System MCQs for Competitive Exams

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Blood and Circulatory System MCQs for Competitive Exams

Practice with answers, explanations, and exam-focused revision notes.

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Topic Notes: Blood and Circulatory System

These notes summarize the key preparation context before you attempt the MCQs. Review the topic focus, then practice the questions below with answers and explanations.

Quick Overview

Blood and Circulatory System MCQs in Biology are useful for candidates who need targeted practice for CSS, PMS, FPSC, PPSC, NTS, entry tests, and other competitive exams in Pakistan. This topic page is designed for quick revision, repeated practice, and exam-focused preparation.

Attempt the questions page by page, check the correct answers, read the explanations where available, and compare your weak areas with past papers and mock test performance. Consistent MCQ practice improves speed, confidence, and retention for objective exam sections.

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11
What is considered the typical normal erythrocyte count in a healthy adult male?
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12
Which of the following conditions is least likely to be caused by poor sanitation and hygiene?
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13
Which of the following health issues is associated with a deficiency of potassium in the human body?
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14
Match the diseases in List-I with their primary affected body sites or systems in List-II: (a) Malaria, (b) Filaria, (c) Encephalitis, (d) Leukaemia.
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15
Which dye is most commonly utilized in the dye dilution technique to measure cardiac output?
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16
What substance in the blood is responsible for causing 'Blue Baby Syndrome'?
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17
Hypokalemia is a medical condition resulting from a deficiency of which mineral?
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18
How are fish able to survive in frozen lakes during winter?
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19
What is the clinical definition of hypertension?
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20
Which of the following minerals is essential for the regulation of the human heartbeat?
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