A. 5 liters
B. 6 liters
C. 7 liters
D. 8 liters
Background of Average Adult Blood Volume
An average adult human has approximately 5 liters of blood circulating in the body. Blood makes up about 7–8% of an adult’s body weight, although the exact volume varies according to body size, sex, age, and other factors.
Blood continuously circulates through the heart and blood vessels and performs important functions such as transporting oxygen and nutrients, removing waste products, regulating body temperature, and supporting the immune system.
Key Points About Adult Blood Volume to remember:
- Average Blood Volume: About 5 liters
- Percentage of Body Weight: About 7–8%
- Main Pump: Heart
- Circulates Through: Blood vessels
- Main Functions: Transport, regulation, and protection
- Major Components: Plasma, red blood cells, white blood cells, and platelets
- Exam Area: Everyday Science, Biology, and General Knowledge
Related GK MCQs & Exam Practice Questions Based on Past Paper Patterns
- What is the average blood volume of an adult human?
Answer: About 5 liters. - Approximately what percentage of adult body weight is blood?
Answer: About 7–8%. - Which organ pumps blood throughout the body?
Answer: Heart. - Which component of blood carries most oxygen?
Answer: Red blood cells. - Which part of blood helps with clotting?
Answer: Platelets.
Exam Tip
For GK MCQs, Everyday Science, Biology, past papers, and competitive exam practice, remember:
Average adult blood volume → About 5 liters → Around 7–8% of body weight
This fact is useful for PPSC, FPSC, PMS, CSS, NTS, OTS, General Knowledge, Everyday Science, Biology, and other competitive exams.