Multiple choice general knowledge science & technology The total volume of blood in a normal adult human being is 5-6 litres 3-4 litres 8-10 litres 10-12 litres Reveal answer Fill a bubble to check yourself A Correct answer Explanation A normal adult human has approximately 5-6 liters of blood, which is about 7-8% of total body weight. This volume can vary based on body size, gender, and other factors. Options C and D are far too high.