Protective action against harmful household insects and pests can be taken by the use of
Options
(a)Infrasonic waves
(b)Microwaves
(c)Ultrasonic waves
(d)Low frequency radio waves
The full breakdown is part of the paid archive
This question's answer, explanation and links to every related question across 48 years (1979–2026) are inside the app. The two most recent years are free to read in full — no account needed.
Independent UPSC previous-year-questions study tool — not affiliated with or endorsed by the UPSC. Question text is reproduced from publicly released UPSC examination papers. UPSCviaPYQs · Privacy · Terms