GATE Air and Noise Pollution: Particulate Pollutants – Previous Year Questions
8 GATE previous year questions on Particulate Pollutants (Air and Noise Pollution, Environmental Science and Engineering) with answers and explanations, from every paper.
- GATE 2021 ES Q46 – Which are dominant removal mechanisms for spherical particles below 10 µm in a fabric filter?
- GATE 2022 ES Q41 – In bag filtration, arrange mechanisms for particles of decreasing size.
- GATE 2023 ES Q40 – A boiler emits fine particulate matter at a location with high plume rise. Which control is best if the collected particles will be reused?
- GATE 2024 ES Q29 – Which equipment controls industrial particulate air pollution?
- GATE 2024 ES Q41 – A settling chamber has height H, length L, horizontal air speed V h and particle terminal settling speed V t. Which equality defines the minimum…
- GATE 2024 ES Q57 – A particle moves at 18 m/s in a cyclone of radius25 cm. Find centrifugal/gravitational force ratio, to two decimals, using g=9.8 m/s².
- GATE 2025 ES Q60 – A dispersoid has spherical equal-density particles. Diameters1,10,100 µm have respective counts1000,500,10 and number-removal efficiencies99%,75%,10%.…
- GATE 2026 ES Q21 – In air pollution control device design, the size of particles removed with 50% efficiency is called