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Important Days & DatesHard

World Blood Donor Day, observed on 14 June, marks the birth anniversary of the scientist who discovered

  1. A.Insulin
  2. B.The ABO blood groups
  3. C.Penicillin
  4. D.The hepatitis B virus

Correct answer

B. The ABO blood groups

Explanation

The correct answer is B, the ABO blood groups. The day falls on the birth anniversary of Karl Landsteiner, born on 14 June 1868, who classified human blood into the groups A, B and O and thus made safe transfusion possible; he received the Nobel Prize in Physiology or Medicine for this work. Option A is wrong because insulin was discovered by Frederick Banting with Charles Best, and Banting's birthday of 14 November is kept as World Diabetes Day. Option C is wrong because penicillin was discovered by Alexander Fleming in 1928 and no international day marks his birth. Option D is wrong because the hepatitis B virus was discovered by Baruch Blumberg, whose birthday of 28 July is observed as World Hepatitis Day, a day easily confused with this one.

Read the full article: Health and Environment Days: Dates and Their Reasons

Practice Questions

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Q1.Important Days & DatesEasy

World Environment Day is observed every year on

  1. A.22 April
  2. B.5 June
  3. C.8 June
  4. D.16 September
Show answer
Correct answer: B. 5 June

World Environment Day marks the opening of the United Nations Conference on the Human Environment held at Stockholm in 1972, and it has been observed since 1974 under the lead of the United Nations Environment Programme, with a fresh theme and a host country each year.

Q2.Important Days & DatesMedium

World Health Day is observed on 7 April because on that day in 1948

  1. A.The Red Cross was founded
  2. B.The World Health Organization came into being
  3. C.Penicillin was discovered
  4. D.The first vaccine was given
Show answer
Correct answer: B. The World Health Organization came into being

The constitution of the World Health Organization took effect on 7 April 1948, and the anniversary of that day has been kept as World Health Day since 1950, with a theme chosen by the organisation; its headquarters are at Geneva in Switzerland.

Q3.Important Days & DatesMedium

World Wetlands Day, observed on 2 February, marks the signing of which convention?

  1. A.Basel Convention
  2. B.Ramsar Convention
  3. C.CITES
  4. D.Convention on Biological Diversity
Show answer
Correct answer: B. Ramsar Convention

The Convention on Wetlands was signed on 2 February 1971 in the Iranian city of Ramsar on the shore of the Caspian Sea, and the wetlands listed under it are still called Ramsar sites; the day has been observed on this date since 1997.

Q4.Important Days & DatesEasy

World Ozone Day is observed on

  1. A.16 September
  2. B.5 June
  3. C.23 March
  4. D.22 May
Show answer
Correct answer: A. 16 September

The day marks the signing of the Montreal Protocol on Substances that Deplete the Ozone Layer on 16 September 1987, an agreement to phase out chlorofluorocarbons and other ozone destroying chemicals, and it is often called the most successful environmental treaty.

Q5.Important Days & DatesEasy

World AIDS Day is observed every year on

  1. A.1 December
  2. B.3 December
  3. C.10 December
  4. D.14 November
Show answer
Correct answer: A. 1 December

World AIDS Day has been observed on the first of December since 1988 and was the first global health day of its kind, its symbol being the red ribbon; the theme changes every year and the day is used to press for testing, treatment and an end to stigma.