World Blood Donor Day, observed on 14 June, marks the birth anniversary of the scientist who discovered
- A.The circulation of blood
- B.The ABO blood groups
- C.Penicillin
- D.The structure of DNA
Correct answer
Explanation
The correct answer is B, the ABO blood groups. The day falls on the birth anniversary of Karl Landsteiner, whose discovery of the blood groups made safe transfusion possible and won him the Nobel Prize in Physiology or Medicine. The observance thanks voluntary donors and encourages regular donation.
Option A refers to William Harvey, who described the circulation of blood in the seventeenth century; no day in June marks him. Option C refers to Alexander Fleming and penicillin, a discovery of 1928 that has no observance in this month. Option D refers to the work of Watson, Crick, Franklin and Wilkins in the 1950s, again with no day attached in May or June. Questions of this type join a date to a person, so keep a short list of those links for the whole year.
Read the full article: Important Days in May and June: Dates and Facts
Practice Questions
View allWorld Press Freedom Day is observed every year on
- A.1 May
- B.3 May
- C.8 May
- D.17 May
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The day is kept to remind governments of their duty towards freedom of expression and to mark the risks journalists take in their work, and it is the first of the international observances in the month.
Read the full explanation →International Nurses Day, observed on 12 May, marks the birth anniversary of
- A.Mother Teresa
- B.Florence Nightingale
- C.Henry Dunant
- D.Karl Landsteiner
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Her work with wounded soldiers in the Crimean War and the training school she founded afterwards turned nursing into a trained profession, and the day carries her name in every account of it.
Read the full explanation →National Technology Day is observed in India on 11 May because on that day in 1998 India
- A.Launched its first satellite
- B.Conducted nuclear tests at Pokhran
- C.Set up its first supercomputer
- D.Started its first nuclear power station
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On 11 May 1998 India carried out nuclear tests at Pokhran in Rajasthan, and the same day brought the first test flight of the indigenous Hansa aircraft and a successful test of the Trishul missile.
Read the full explanation →World Red Cross and Red Crescent Day is observed on 8 May, the birth anniversary of
- A.Henry Dunant
- B.Florence Nightingale
- C.Louis Pasteur
- D.Alexander Fleming
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He shared the first Nobel Peace Prize, and the movement observes his birthday as its day.
Read the full explanation →World No Tobacco Day is observed on
- A.21 May
- B.29 May
- C.31 May
- D.1 June
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The day closes the month and is meant to draw attention to the harm caused by tobacco in every form and to the policies that reduce its use.
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