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Body Fluids and Circulation · Question 2

NEET (UG) 2026MCQMedium📈 Topic in 50% papers+4−1
1

Select the incorrect statements with reference to Rh grouping. Choose the answer from the options given below:

  1. A and B only
  2. C and D only
  3. A and E only
  4. B and C only

Answer

(3) A and E only

Solution

As per NCERT,

B – correct: nearly 80% of humans are Rh+ve (have the Rh antigen on RBCs).

C – correct: the Rh group should also be matched before blood transfusion.

D – correct: Rh incompatibility occurs when an Rh-ve mother carries an Rh+ve foetus.

A – incorrect: erythroblastosis foetalis occurs with an Rh-ve mother and an Rh+ve foetus, not the reverse.

E – incorrect: anti-Rh antibodies are given to the mother immediately after the delivery of the first child.

∴ Incorrect statements: A and E

Answer: (3)

NEET (UG) 2026

Keep practising — Body Fluids and Circulation

2

Which of the following statements is incorrect?

  1. Fibrinogen is produced from fibrin
  2. Blood coagulates in response to an injury
  3. Blood clot consists of fibrins
  4. Fibrin is produced from fibrinogen
RE-NEET (UG) 2026
3

The number of action potentials generated by sino-atrial node (SAN) in a healthy human is per minute.

  1. 120–140
  2. 28–30
  3. 70–75
  4. 100–110
RE-NEET (UG) 2026
4

The opening between the right atrium and the right ventricle is guarded by .

  1. sino-atrial node
  2. bicuspid valve
  3. tricuspid valve
  4. semilunar valve
RE-NEET (UG) 2026
5

Cardiac activities of the heart are regulated by: Choose the correct answer from the options given below :

  1. A, C and D Only
  2. A, B and D Only
  3. A, B and C Only
  4. A, B, C and D
NEET (UG) 2025
6

Following are the stages of pathway for conduction of an action potential through the heart Choose the correct sequence of pathway from the options given below

  1. E-C-A-D-B
  2. A-E-C-B-D
  3. B-D-E-C-A
  4. E-A-D-B-C
NEET (UG) 2024
7

Match List I with List II : Choose the correct answer from the options given below :

  1. A-I, B-III, C-IV, D-II
  2. A-III, B-II, C-IV, D-I
  3. A-II, B-III, C-I, D-IV
  4. A-IV, B-II, C-I, D-III
NEET (UG) 2024
8

A person with blood group ARh- can receive the blood transfusion from which of the following types? Choose the correct answer from the options given below :

  1. D and E only
  2. D only
  3. A and B only
  4. C and D only
RE-NEET (UG) 2024
9

'Lub' sound of Heart is caused by the .

  1. closure of the semilunar valves
  2. opening of tricuspid and bicuspid valves
  3. opening of the semilunar valves
  4. closure of the tricuspid and bicuspid valves
RE-NEET (UG) 2024
10

Match List I with List II. Choose the correct answer from the options given below :

  1. A-IV, B-III, C-II, D-I
  2. A-II, B-IV, C-I, D-III
  3. A-I, B-II, C-III, D-IV
  4. A-III, B-I, C-IV, D-II
NEET (UG) 2023
11

Which of the following statements are correct? Choose the correct answer from the options given below:

  1. C and E only
  2. B and C only
  3. A and B only
  4. D and E only
NEET (UG) 2023

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