Q. Consider the following statements with reference to paraquat dichloride:
1.It is a non-selective, contact herbicide used for controlling a broad spectrum of weeds.
2.It is readily degraded in the human body and is therefore considered one of the safest herbicides for accidental ingestion.
Which of the statements given above is/are correct?
Answer: A
Notes:
Explanation: 1 only
Statement 1 is correct: Paraquat Dichloride is a fast-acting, non-selective contact herbicide used to control grasses and broadleaf weeds. It destroys plant cells by generating reactive oxygen species (ROS) during photosynthesis, leading to rapid desiccation of green tissues.
Statement 2 is incorrect: Paraquat is highly toxic to humans. Even small quantities can be fatal if ingested, causing severe damage to the lungs, kidneys, liver, and other organs. There is no specific antidote, and many countries have restricted or banned its use due to its acute toxicity.
Source: BS
