UPSC 2022 › Environment & Ecology

Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide ?

“System of Rice Intensification” of cultivation, in which alternate wetting and drying of rice fields is practised, results in :

1. Reduced seed requirement
2. Reduced methane production
3. Reduced electricity consumption

Select the correct answer using the code given below :

“Climate Action Tracker” which monitors the emission reduction pledges of different countries is a :

Consider the following statements :

1. “The Climate Group” is an international non-profit organization that drives climate action by building large networks and runs them.
2. The International Energy Agency in partnership with the Climate Group launched a global initiative “EP100”.
3. EP100 brings together leading companies committed to driving innovation in energy efficiency and increasing competitiveness while delivering on emission reduction goals.
4. Some Indian companies are members of EP100.
5. The International Energy Agency is the Secretariat to the “Under2 Coalition”.

Which of the statements given above are correct ?

“If rainforests and tropical forests are the lungs of the Earth, then surely wetlands function as its kidneys.” Which one of the following functions of wetlands best reflects the above statement ?

In the context of WHO Air Quality Guidelines, consider the following statements :

1. The 24-hour mean of PM2.5 should not exceed 15 μg/m3 and annual mean of PM2.5 should not exceed 5 μg/m3.
2. In a year, the highest levels of ozone pollution occur during the periods of inclement weather.
3. PM10 can penetrate the lung barrier and enter the bloodstream.
4. Excessive ozone in the air can trigger asthma.

Which of the statements given above are correct ?

With reference to “Gucchi” sometimes mentioned in the news, consider the following statements :

1. It is a fungus.
2. It grows in some Himalayan forest areas.
3. It is commercially cultivated in the Himalayan foothills of north-eastern India.

Which of the statements given above is/are correct ?

Which of the following is not a bird ?

Which of the following are nitrogen-fixing plants ?

1. Alfalfa
2. Amaranth
3. Chickpea
4. Clover
5. Purslane (Kulfa)
6. Spinach

Select the correct answer using the code given below :

“Biorock technology” is talked about in which one of the following situations ?

The “Miyawaki method” is well known for the :

Which one of the following has been constituted under the Environment (Protection) Act, 1986 ?

Which one of the following best describes the term “greenwashing” ?

Consider the following statements :

1. Gujarat has the largest solar park in India.
2. Kerala has a fully solar powered International Airport.
3. Goa has the largest floating solar photovoltaic project in India.

Which of the statements given above is/are correct ?

With reference to Indian laws about wildlife protection, consider the following statements :

1. Wild animals are the sole property of the government.
2. When a wild animal is declared protected, such animal is entitled for equal protection whether it is found in protected areas or outside.
3. Apprehension of a protected wild animal becoming a danger to human life is sufficient ground for its capture or killing.

Which of the statements given above is/are correct ?

Certain species of which one of the following organisms are well known as cultivators of fungi ?

Consider the following :

1. Carbon monoxide
2. Nitrogen oxide
3. Ozone
4. Sulphur dioxide Excess of which of the above in the environment is/are cause(s) of acid rain ?