Chlordane was used during which decades?

Chlordane was used during which decades?

• A. 1960s-2010s
• B. 1930s-1950s
• C. 1920s-1930s
• D. 1940s-1980s

Answer: (D)

This question centers on when chlordane was in use as a pesticide. Chlordane was developed in the 1940s and became widely used after World War II for termite control and other insect problems. Because of its persistence in the environment and tendency to bioaccumulate, regulatory action began in the 1980s, with residential uses banned in 1988 and broader phaseouts occurring through that decade. So the practical era of use spans roughly the 1940s through the 1980s, which fits the option describing 1940s-1980s. The other time frames don’t cover the full span—from its introduction in the 1940s to its ban in the late 1980s—so they’re not correct.

This question centers on when chlordane was in use as a pesticide. Chlordane was developed in the 1940s and became widely used after World War II for termite control and other insect problems. Because of its persistence in the environment and tendency to bioaccumulate, regulatory action began in the 1980s, with residential uses banned in 1988 and broader phaseouts occurring through that decade. So the practical era of use spans roughly the 1940s through the 1980s, which fits the option describing 1940s-1980s. The other time frames don’t cover the full span—from its introduction in the 1940s to its ban in the late 1980s—so they’re not correct.