Top 50 Must-Know Blood Group MCQs for Competitive Exams

Blood Group MCQs

Which blood group is considered the universal donor?

  • (a) A+
  • (b) B+
  • (c) O-
  • (d) AB+
Answer

Answer: (c) O-

Which blood group is considered the universal recipient?

  • (a) A+
  • (b) AB+
  • (c) B+
  • (d) O+
Answer

Answer: (b) AB+

What does “Rh” stand for?

  • (a) Rheumatoid
  • (b) Rhesus
  • (c) Red Hemoglobin
  • (d) Radiant Hematology
Answer

Answer: (b) Rhesus

Which component of blood is primarily responsible for clotting?

  • (a) Red blood cells
  • (b) White blood cells
  • (c) Platelets
  • (d) Plasma
Answer

Answer: (c) Platelets

In which type of blood cell is hemoglobin found?

  • (a) Red blood cells
  • (b) White blood cells
  • (c) Platelets
  • (d) Plasma
Answer

Answer: (a) Red blood cells

Which blood group does not carry any antigens on the surface of its red blood cells?

  • (a) A
  • (b) B
  • (c) AB
  • (d) O
Answer

Answer: (d) O

What is the primary function of white blood cells?

  • (a) Oxygen transport
  • (b) Fight infection
  • (c) Clot formation
  • (d) Nutrient transport
Answer

Answer: (b) Fight infection

Who discovered blood groups?

  • (a) Louis Pasteur
  • (b) Alexander Fleming
  • (c) Karl Landsteiner
  • (d) William Harvey
Answer

Answer: (c) Karl Landsteiner

What percentage of blood is plasma?

  • (a) 90%
  • (b) 55%
  • (c) 45%
  • (d) 25%
Answer

Answer: (b) 55%

What is the most common blood type in the world?

  • (a) A+
  • (b) O+
  • (c) B+
  • (d) AB+
Answer

Answer: (b) O+

Which blood group is the rarest?

  • (a) AB-
  • (b) O-
  • (c) A-
  • (d) B-
Answer

Answer: (a) AB-

Which blood component carries oxygen from the lungs to the body?

  • (a) White blood cells
  • (b) Platelets
  • (c) Red blood cells
  • (d) Plasma
Answer

Answer: (c) Red blood cells

Which of the following is not a function of blood?

  • (a) Transport of oxygen
  • (b) Transport of nutrients
  • (c) Regulation of body temperature
  • (d) Digestion of food
Answer

Answer: (d) Digestion of food

Which of the following blood types has anti-A antibodies?

  • (a) B
  • (b) A
  • (c) O
  • (d) AB
Answer

Answer: (a) B

Which of the following blood types has anti-B antibodies?

  • (a) A
  • (b) B
  • (c) AB
  • (d) O
Answer

Answer: (a) A

Which blood group can receive blood from any group?

  • (a) O
  • (b) A
  • (c) AB
  • (d) B
Answer

Answer: (c) AB

Which blood component is responsible for fighting infections?

  • (a) Plasma
  • (b) Platelets
  • (c) White blood cells
  • (d) Red blood cells
Answer

Answer: (c) White blood cells

Which of the following is the primary function of hemoglobin?

  • (a) Oxygen transport
  • (b) Infection defense
  • (c) Blood clotting
  • (d) Nutrient transport
Answer

Answer: (a) Oxygen transport

What is the universal donor blood type?

  • (a) A+
  • (b) B-
  • (c) AB+
  • (d) O-
Answer

Answer: (d) O-

Which blood type is known as the universal recipient?

  • (a) A+
  • (b) B+
  • (c) AB+
  • (d) O+
Answer

Answer: (c) AB+

Which blood component is crucial for blood clotting?

  • (a) Red blood cells
  • (b) Plasma
  • (c) Platelets
  • (d) White blood cells
Answer

Answer: (c) Platelets

Which blood component carries nutrients?

  • (a) Red blood cells
  • (b) Plasma
  • (c) Platelets
  • (d) White blood cells
Answer

Answer: (b) Plasma

What determines a person’s blood group?

  • (a) The hemoglobin type
  • (b) The types of antibodies in the plasma
  • (c) The types of antigens on the surface of red blood cells
  • (d) The white blood cell count
Answer

Answer: (c) The types of antigens on the surface of red blood cells

Which blood type is considered the rarest?

  • (a) AB+
  • (b) B-
  • (c) AB-
  • (d) O-
Answer

Answer: (c) AB-

Which blood type has neither A nor B antigens?

  • (a) O
  • (b) A
  • (c) B
  • (d) AB
Answer

Answer: (a) O

Which blood type has both A and B antigens?

  • (a) AB
  • (b) O
  • (c) A
  • (d) B
Answer

Answer: (a) AB

What is the most common blood type in India?

  • (a) A+
  • (b) B+
  • (c) O+
  • (d) AB+
Answer

Answer: (c) O+

Which of the following blood types is least common in India?

  • (a) AB-
  • (b) B+
  • (c) O+
  • (d) A-
Answer

Answer: (a) AB-

Which blood type is known as the “universal plasma donor”?

  • (a) O+
  • (b) AB+
  • (c) A-
  • (d) AB-
Answer

Answer: (d) AB-

What is the significance of the Rh factor in blood?

  • (a) It determines blood group
  • (b) It affects pregnancy
  • (c) It influences blood clotting
  • (d) It regulates oxygen transport
Answer

Answer: (b) It affects pregnancy

Which blood group is associated with the highest malaria protection?

  • (a) A+
  • (b) O+
  • (c) B+
  • (d) AB+
Answer

Answer: (b) O+

Which blood type is the most in-demand for donations?

  • (a) A+
  • (b) B+
  • (c) O-
  • (d) AB+
Answer

Answer: (c) O-

Which blood type is known as the “universal donor”?

  • (a) A+
  • (b) O-
  • (c) AB+
  • (d) B+
Answer

Answer: (b) O-

Which blood group is considered the universal recipient?

  • (a) AB+
  • (b) B+
  • (c) O-
  • (d) A+
Answer

Answer: (a) AB+

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