31. Human Body - Blood, Circulation and Immune System

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1.
Hemoglobin in humans has the highest affinity for which of the following gases?
2.
A doctor, while using the Sphygmomanometer to measure the blood pressure of a patient, also uses the Stethoscope to listen a whooshing sound of blood, in which among the following arteries?
3.
Which among the following Vitamins helps in clotting of Blood?
4.
What is the main function of Lymphocytes?
5.
Normal Human blood pressure is

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