cause can be related to radium, leading to discontinuation of use of radium in 1960.ģ. 1920s- workers painting watch dials had alarming incidence of a few diseases.Ģ. The construction of the argument is as follows:ġ. Which one of the following, if true, LEAST strengthens the argument above?Ī: The surveys also found that the incidence of anemia, loss of teeth, bone fractures and death from cancer among factory workers who painted watch dials with non-luminous paint was not greater than that among the general population.ī: The surveys also found that factory workers who painted watch dials with luminous paint, the extent of their health problems was directly proportional to the cumulative number of hours for which they had worked with luminous paint till then.Ĭ: Barriers of lead or earth provide adequate protection to human beings from harmful radioactive substances.ĭ: People who wear watches that have luminous dials and were made before 1960 for more than a decade have an alarming incidence of anemia.Į: Most chemists and laboratory workers who worked with radium for more than a year in the first decade after its discovery in 1898 did not have, for the rest of their lives, a greater incidence of anemia, loss of teeth, bone fractures and death from cancer than the general population. Therefore, those watch-collectors who own watches that have luminous dials and were made before 1960 should either bury these watches in the ground or store them in thick lead boxes to protect themselves and the people around them from anemia, loss of teeth, bone fractures and death from cancer. However, radium stays active for hundreds of years. As a result, the industrial use of radioactive luminous paint was completely stopped by 1960.

This paint contained radium, a radioactive element. In the 1920s, surveys of factory workers who painted watch dials with luminous paint found an alarming incidence of anemia, loss of teeth, bone fractures and death from cancer.

Radium luminous paint