Rh- blood grouping was first identified by
Answer : C. Weiner
The A,B,O blood groups were discovered by
Answer : C. Karl Landsteiner
Normal blood pressure is
Answer : A. 120/80 mm Hg
The mineral needed for clotting of blood in animal is
Answer : C. Calcium
In the human body, where does buffer action take place?
Answer : B. Stomach juice
Which of the following vitamins is associatd with the clotting of the blood?
Answer : D. K