Climate Change & Global Warming PYQs — 11 UPSC CSE Previous Year Questions

Question 1

Consider the following statements : Carbon dioxide (CO2) emissions in India are less than 0·5 t CO2/capita. In terms of CO2 emissions from fuel combustion, India ranks second in Asia-Pacific region. Electricity and heat producers are the largest sources of CO2 emissions in India. Which of the statements given above is/are correct?

Accepted Answer

C. II and III only

Question 2

The World Bank warned that India could become one of the first places where wet-bulb temperatures routinely exceed 35°C. Which of the following statements best reflect(s) the implication of the above-said report? Peninsular India will most likely suffer from flooding, tropical cyclones and droughts. The survival of animals including humans will be affected as shedding of their body heat through perspiration becomes difficult.

Accepted Answer

C. Both I and II

Question 3

Consider the following: Aerosols Foam agents Fire retardants Lubricants In the making of how many of the above are hydrofluorocarbons used?

Accepted Answer

C. Only three

Question 4

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

Accepted Answer

B. Rice

Question 5

Which one of the following statements best describes the term 'Social Cost of Carbon'? It is a measure, in monetary value, of the —

Accepted Answer

A. long-term damage done by a tonne of CO₂ emissions in a given year.

Question 6

Which of the following statements are correct about the deposits of 'methane hydrate'? Global warming might trigger the release of methane gas from these deposits. Large deposits of 'methane hydrate' are found in Arctic Tundra and under the seafloor. Methane in atmosphere oxidizes to carbon dioxide after a decade or two. Select the correct answer using the code given below.

Accepted Answer

D. 1, 2 and 3

Question 7

With reference to 'Global Climate Change Alliance', which of the following statements is/are correct? It is an initiative of the European Union. It provides technical and financial support to targeted developing countries to integrate climate change into their development policies and budgets. It is coordinated by World Resources Institute (WRI) and World Business Council for Sustainable Development (WBCSD). Select the correct answer using the code given below :

Accepted Answer

A. 1 and 2 only

Question 8

The scientific view is that the increase in global temperature should not exceed 2°C above pre-industrial level. If the global temperature increases beyond 3°C above the pre-industrial level, what can be its possible impact/impacts on the world? Terrestrial biosphere tends toward a net carbon source. Widespread coral mortality will occur. All the global wetlands will permanently disappear. Cultivation of cereals will not be possible anywhere in the world. Select the correct answer using the code given below.

Accepted Answer

B. 1 and 2 only

Question 9

Due to their extensive rice cultivation, some regions may be contributing to global warming. To what possible reason/reasons is this attributable?

The anaerobic conditions associated with rice cultivation cause the emission of methane.
When nitrogen-based fertilizers are used, nitrous oxide is emitted from the cultivated soil.

Which of the statements given above is/are correct?

Accepted Answer

C. Both 1 and 2

Question 10

Consider the following which can be found in the ambient atmosphere: Soot Sulphur hexafluoride Water vapour Which of the above contribute to the warming up of the atmosphere?

Accepted Answer

D. 1, 2 and 3

Question 11

Consider the following Rice fields Coal mining Domestic animals Wetlands Which of the above are sources of methane, a major greenhouse gas?

Accepted Answer

D. l, 2, 3 and 4