Civil Services Prep

Prelims 2024 · Science and Technology · Question 94

Consider the following activities:

  1. Identification of narcotics on passengers at airports or in aircraft
  2. Monitoring of precipitation
  3. Tracking the migration of animals.

In how many of the above activities can the radars be used?

  1. Only one
  2. Only two
  3. All three
  4. None

Answer

Only two

  1. Identification of narcotics on passengers at airports or in aircraft — This is not a standard use of radar. Airport security uses X-ray scanners, CT scanners, trace detectors, sniffer dogs, etc.; radar is for detecting objects/position/motion, not reliably identifying narcotic substances. Verdict: Cannot be used.

  2. Monitoring of precipitation — Weather radar is routinely used to detect rainfall, snowfall and storm structure. Verdict: Can be used.

  3. Tracking the migration of animals — Radar is used to track migration of birds, bats and even insect swarms. Verdict: Can be used.

Hence, only two activities (2 and 3) can use radar, so the correct answer is (b).

  1. Which of the following statements with regard to genetic medicine is/are correct ? 1. Genetic medicines…
  2. Which of the following statements with regard to Large Language Models (LLMs) used in machine learning is/are…
  3. Which of the following statements with regard to stealth technology is/are correct ? 1. Stealth objects have a…
  4. Which of the following statements with regard to Black Boxes used in modern aircrafts is/are correct ? 1. They…
  5. Consider the following statements with regard to involvement of private entities in India's space programme :…
  6. Which of the following statements with regard to drone swarms is/are correct ? 1. They use Terahertz band of…