Select the incorrect statement with reference to Rh grouping. A. Erythroblastosis foetalis is a condition observed having foetus with Rh–ve blood and mother with Rh+ve blood. B. Rh antigen is observed on RBCs in the majority of human beings. C. Before blood transfusion, Rh group should also be matched. D. Rh incompatibility is observed when a pregnant mother is Rh–ve and the foetus is Rh+ve. E. Erythroblastosis foetalis can be avoided by administering anti-Rh antibodies to the mother immediately after the delivery of the second child.
Answer: (C) A and E only. Answer: (c) A and E only Solution: Statement A is wrong because erythroblastosis foetalis occurs when the mother is Rh-ve and the foetus is Rh+ve (it has the blood types reversed).
- A.C and D only
- B.A and B only
- C.A and E only✓
- D.B and C only
Correct Answer
(C) A and E only
Solution & Explanation
Answer: (c) A and E only Solution: Statement A is wrong because erythroblastosis foetalis occurs when the mother is Rh-ve and the foetus is Rh+ve (it has the blood types reversed). Statement E is wrong because the condition is avoided by giving anti-Rh antibodies after the delivery of the FIRST child, not the second. Statements B, C and D are all correct. So the incorrect ones are A and E. NCERT: Ch 15, p.196, line 31 — "administering anti-Rh antibodies to the mother immediately after the delivery of the first child"