64. Normal adult human male has September 19, 2025 by Admin A. 10 gram of haemoglobin/100 gram of blood B. 14 gram of haemoglobin/100 gram of blood C. 18 gram of haemoglobin/100 gram of blood D. 24 gram of haemoglobin/100 gram of blood ✅ The correct answer is option B.