1998 General Studies, all questions

UPSC Prelims 1998 · General Studies

Question 112: Science and Technology

Haemophilia is a genetic disorder which leads to

adecrease in haemoglobin level
brheumatic heart disease
cdecrease in WBC
dnon-clotting of blood

AnswerThe answer is (d).

Haemophilia is an inherited bleeding disorder in which blood fails to clot properly because a clotting factor (factor VIII in haemophilia A, factor IX in haemophilia B) is missing. The gene is on the X chromosome and recessive, so it mostly affects males. It does not reduce haemoglobin or white cells, and it is not a heart disease.

Why each option is right or wrong
  • (a) Low haemoglobin describes anaemia.
  • (b) Rheumatic heart disease follows streptococcal infection.
  • (c) A fall in white blood cells is leucopenia, not haemophilia.
  • (d) Right: the blood does not clot normally.

Explanation: written by UPSC Grade, not by UPSC.

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Source: UPSC, Civil Services (Preliminary) Examination 1998, General Studies. UPSC's own paper isn't online; the words are from a published compilation. The paper on upsc.gov.in.