| 2321 |
Minamata disease, first reported in Japan in the 1950s, was caused by poisoning with: |
Environmental Studies
Pollutants, sources and sinks |
Medium |
| 2322 |
The increase in concentration of a persistent pollutant such as DDT at successive levels of a food chain is c… |
Environmental Studies
Pollutants, sources and sinks |
Easy |
| 2323 |
The Central Pollution Control Board was first set up under which Act? |
Environmental Studies
Pollutants, sources and sinks |
Hard |
| 2324 |
The Environment (Protection) Act, 1986 was passed soon after which disaster? |
Environmental Studies
Pollutants, sources and sinks |
Medium |
| 2325 |
Which of these is a secondary air pollutant? |
Environmental Studies
Air pollution |
Easy |
| 2326 |
The ozone layer lies mainly in the: |
Environmental Studies
Air pollution |
Easy |
| 2327 |
Rain is considered “acid rain” when its pH falls below about: |
Environmental Studies
Air pollution |
Medium |
| 2328 |
Photochemical smog differs from classical smog because it: |
Environmental Studies
Air pollution |
Hard |
| 2329 |
A layer of warm air lying over cooler air near the ground, which traps pollutants, is called: |
Environmental Studies
Air pollution |
Medium |
| 2330 |
India’s revised National Ambient Air Quality Standards (2009) cover how many pollutants? |
Environmental Studies
Air quality standards and monitoring |
Medium |
| 2331 |
A city reports an AQI of 350. Its air quality falls in which category? |
Environmental Studies
Air quality standards and monitoring |
Easy |
| 2332 |
The 24-hour NAAQS limit for PM2.5 is: |
Environmental Studies
Air quality standards and monitoring |
Hard |
| 2333 |
Why is PM2.5 considered more harmful to health than coarser particles? |
Environmental Studies
Air quality standards and monitoring |
Medium |
| 2334 |
How is the overall Air Quality Index for a location decided? |
Environmental Studies
Air quality standards and monitoring |
Easy |
| 2335 |
India moved to BS-VI emission norms nationwide on 1 April 2020 by skipping: |
Environmental Studies
Vehicular and industrial emissions |
Easy |
| 2336 |
Which device is mainly used in thermal power plants to remove fine particles from flue gases? |
Environmental Studies
Vehicular and industrial emissions |
Medium |
| 2337 |
A catalytic converter in a petrol car requires unleaded fuel because lead: |
Environmental Studies
Vehicular and industrial emissions |
Medium |
| 2338 |
The switch of Delhi’s buses, taxis and autorickshaws to CNG followed an order in 1998 by the: |
Environmental Studies
Vehicular and industrial emissions |
Easy |
| 2339 |
What is the maximum sulphur content allowed in BS-VI fuel? |
Environmental Studies
Vehicular and industrial emissions |
Hard |
| 2340 |
A river stretch receiving untreated sewage will usually show: |
Environmental Studies
Water pollution |
Easy |