11. The main function of the kidney is* A. To control blood pressure B. To control body temperature *C. To remove waste product from the body* D. To help in digestion of food
*10. The main constituent of hemoglobin is* A. Chlorine *B. Iron* C. Calcium D. None of these
9. What is the main component of bones and teeth?* A. Calcium carbonate *B. Calcium phosphate* C. Calcium sulphate D. Calcium nitrate
*8. The largest part of the human brain is the* A. Medulla oblongata B. Cerebellum *C. Cerebrum* D. None of these
*7. Tibia is a bone found in the* A. Skull B. Arm *C. Leg* D. Face
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