SawaalBoxसवाल बॉक्स

Climate Change & Greenhouse Gases

35 questions in Environment & Ecology.

Asked in 2026, 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2014, 2012

2026 · Q31Environment & EcologyClimate Change & Greenhouse Gasesmoderate

Consider the following statements with reference to India’s response to climate change : I. India’s Long-Term Low Emission Development Strategy (LT-LEDS) is a crucial tool for achieving net-zero emissions by 2070. II. India’s 4th Biennial Update Report (BUR-4) submitted in December, 2024 recorded around 8% decrease in Greenhouse gas emissions in 2020 over 2019. III. Climate-resilient development necessarily depends on quick and short-term achievement of emission reduction targets. Which of the following relationships among the above statements is/are correct ? 1. Statement I is empirically supported by statement II. 2. Statement III contradicts the approach implicit in statement I. 3. Statement I and statement III together establish the premise of long-term sustainability. Select the answer using the code given below :

  1. (a)1 only
  2. (b)1 and 2
  3. (c)2 and 3
  4. (d)3 only
Show answerHide answer

Official answer(b) 1 and 2

2025 · Q29Environment & EcologyClimate Change & Greenhouse Gaseseasy

Consider the following statements : I. Without the atmosphere, temperature would be well below freezing point everywhere on the Earth’s surface. II. Heat absorbed and trapped by the atmosphere maintains our planet’s average temperature. III. Atmosphere’s gases, like carbon dioxide, are particularly good at absorbing and trapping radiation. Which of the statements given above are correct?

  1. (a)I and III only
  2. (b)I and II only
  3. (c)I, II and III
  4. (d)II and III only
Show answerHide answer

Official answer(c) I, II and III

2025 · Q31Environment & EcologyClimate Change & Greenhouse Gasesmoderate

Consider the following statements : Statement I : Studies indicate that carbon dioxide emissions from cement industry account for more than 5% of global carbon emissions. Statement II : Silica-bearing clay is mixed with limestone while manufacturing cement. Statement III : Limestone is converted into lime during clinker production for cement manufacturing. Which one of the following is correct in respect of the above statements?

  1. (a)Both Statement II and Statement III are correct and both of them explain Statement I
  2. (b)Both Statement II and Statement III are correct but only one of them explains Statement I
  3. (c)Only one of the Statements II and III is correct and that explains Statement I
  4. (d)Neither Statement II nor Statement III is correct
Show answerHide answer

Official answer(b) Both Statement II and Statement III are correct but only one of them explains Statement I

2025 · Q38Environment & EcologyClimate Change & Greenhouse Gasesmoderate

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

  1. (a)I and III only
  2. (b)II only
  3. (c)II and III only
  4. (d)I, II and III
Show answerHide answer

Official answer(c) II and III only

2023 · Q18Environment & EcologyClimate Change & Greenhouse Gasesmoderate

Consider the following statements : 1. Some microorganisms can grow in environments with temperature above the boiling point of water. 2. Some microorganisms can grow in environments with temperature below the freezing point of water. 3. Some microorganisms can grow in highly acidic environment with a pH below 3. How many of the above statements are correct?

  1. (a)Only one
  2. (b)Only two
  3. (c)All three
  4. (d)None
Show answerHide answer

Official answer(c) All three

2023 · Q23Environment & EcologyClimate Change & Greenhouse Gasesmoderate

Consider the following statements : Statement-I : Carbon markets are likely to be one of the most widespread tools in the fight against climate change. Statement-II : Carbon markets transfer resources from the private sector to the State. Which one of the following is correct in respect of the above statements?

  1. (a)Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I
  2. (b)Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I
  3. (c)Statement-I is correct but Statement-II is incorrect
  4. (d)Statement-I is incorrect but Statement-II is correct
Show answerHide answer

Official answer(b) Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I

2023 · Q68Environment & EcologyClimate Change & Greenhouse Gasesmoderate

Consider the following activities : 1. Spreading finely ground basalt rock on farmlands extensively 2. Increasing the alkalinity of oceans by adding lime 3. Capturing carbon dioxide released by various industries and pumping it into abandoned subterranean mines in the form of carbonated waters How many of the above activities are often considered and discussed for carbon capture and sequestration?

  1. (a)Only one
  2. (b)Only two
  3. (c)All three
  4. (d)None
Show answerHide answer

Official answer(c) All three

2021 · Q29Environment & EcologyClimate Change & Greenhouse Gasesmoderate

The ‘Common Carbon Metric’, supported by UNEP, has been developed for

  1. (a)assessing the carbon footprint of building operations around the world
  2. (b)enabling commercial farming entities around the world to enter carbon emission trading
  3. (c)enabling governments to assess the overall carbon footprint caused by their countries
  4. (d)assessing the overall carbon footprint caused by the use of fossil fuels by the world in a unit time
Show answerHide answer

Official answer(a) assessing the carbon footprint of building operations around the world

2020 · Q85Environment & EcologyClimate Change & Greenhouse Gasesmoderate

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

  1. (a)long-term damage done by a tonne of CO₂ emissions in a given year.
  2. (b)requirement of fossil fuels for a country to provide goods and services to its citizens, based on the burning of those fuels.
  3. (c)efforts put in by a climate refugee to adapt to live in a new place.
  4. (d)contribution of an individual person to the carbon footprint on the planet Earth.
Show answerHide answer

Official answer(a) long-term damage done by a tonne of CO₂ emissions in a given year.

2019 · Q25Environment & EcologyClimate Change & Greenhouse Gaseseasy

In the context of which of the following do some scientists suggest the use of cirrus cloud thinning technique and the injection of sulphate aerosol into stratosphere?

  1. (a)Creating the artificial rains in some regions
  2. (b)Reducing the frequency and intensity of tropical cyclones
  3. (c)Reducing the adverse effects of solar wind on the Earth
  4. (d)Reducing the global warming
Show answerHide answer

Official answer(d) Reducing the global warming

2019 · Q34Environment & EcologyClimate Change & Greenhouse Gasesmoderate

Which of the following statements are correct about the deposits of 'methane hydrate'? 1. Global warming might trigger the release of methane gas from these deposits. 2. Large deposits of 'methane hydrate' are found in Arctic Tundra and under the seafloor. 3. Methane in atmosphere oxidizes to carbon dioxide after a decade or two. Select the correct answer using the code given below.

  1. (a)1 and 2 only
  2. (b)2 and 3 only
  3. (c)1 and 3 only
  4. (d)1, 2 and 3
Show answerHide answer

Official answer(d) 1, 2 and 3

2018 · Q65Environment & EcologyClimate Change & Greenhouse Gaseseasy

Which of the following statements best describes "carbon fertilization" ?

  1. (a)Increased plant growth due to increased concentration of carbon dioxide in the atmosphere
  2. (b)Increased temperature of Earth due to increased concentration of carbon dioxide in the atmosphere
  3. (c)Increased acidity of oceans as a result of increased concentration of carbon dioxide in the atmosphere
  4. (d)Adaptation of all living beings on Earth to the climate change brought about by the increased concentration of carbon dioxide in the atmosphere
Show answerHide answer

Official answer(a) Increased plant growth due to increased concentration of carbon dioxide in the atmosphere

2017 · Q25Environment & EcologyClimate Change & Greenhouse Gasesmoderate

In the context of mitigating the impending global warming due to anthropogenic emissions of carbon dioxide, which of the following can be the potential sites for carbon sequestration ? 1. Abandoned and uneconomic coal seams 2. Depleted oil and gas reservoirs 3. Subterranean deep saline formations Select the correct answer using the code given below :

  1. (a)1 and 2 only
  2. (b)3 only
  3. (c)1 and 3 only
  4. (d)1, 2 and 3
Show answerHide answer

Official answer(d) 1, 2 and 3

2016 · Q33Environment & EcologyClimate Change & Greenhouse Gasesmoderate

Which of the following best describes/describe the aim of 'Green India Mission' of the Government of India? 1. Incorporating environmental benefits and costs into the Union and State Budgets thereby implementing the 'green accounting' 2. Launching the second green revolution to enhance agricultural output so as to ensure food security to one and all in the future 3. Restoring and enhancing forest cover and responding to climate change by a combination of adaptation and mitigation measures Select the correct answer using the code given below.

  1. (a)1 only
  2. (b)2 and 3 only
  3. (c)3 only
  4. (d)1, 2 and 3
Show answerHide answer

Official answer(c) 3 only

2016 · Q55Environment & EcologyClimate Change & Greenhouse Gasesmoderate

What is 'Greenhouse Gas Protocol'?

  1. (a)It is an international accounting tool for government and business leaders to understand, quantify and manage greenhouse gas emissions
  2. (b)It is an initiative of the United Nations to offer financial incentives to developing countries to reduce greenhouse gas emissions and to adopt eco-friendly technologies
  3. (c)It is an inter-governmental agreement ratified by all the member countries of the United Nations to reduce greenhouse gas emissions to specified levels by the year 2022
  4. (d)It is one of the multilateral REDD+ initiatives hosted by the World Bank
Show answerHide answer

Official answer(a) It is an international accounting tool for government and business leaders to understand, quantify and manage greenhouse gas emissions

2014 · Q53Environment & EcologyClimate Change & Greenhouse Gasesmoderate

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? 1. Terrestrial biosphere tends toward a net carbon source. 2. Widespread coral mortality will occur. 3. All the global wetlands will permanently disappear. 4. Cultivation of cereals will not be possible anywhere in the world. Select the correct answer using the code given below.

  1. (a)1 only
  2. (b)1 and 2 only
  3. (c)2, 3 and 4 only
  4. (d)1, 2, 3 and 4
Show answerHide answer

Official answer(b) 1 and 2 only

2014 · Q79Environment & EcologyClimate Change & Greenhouse Gasesmoderate

Consider the following statements regarding ‘Earth Hour’ : 1. It is an initiative of UNEP and UNESCO. 2. It is a movement in which the participants switch off the lights for one hour on a certain day every year. 3. It is a movement to raise the awareness about the climate change and the need to save the planet. Which of the statements given above is/are correct?

  1. (a)1 and 3 only
  2. (b)2 only
  3. (c)2 and 3 only
  4. (d)1, 2 and 3
Show answerHide answer

Official answer(c) 2 and 3 only

2012 · Q5Environment & EcologyClimate Change & Greenhouse Gasesmoderate

If National Water Mission is properly and completely implemented, how will it impact the country? 1. Part of the water needs of urban areas will be met through recycling of waste-water. 2. The water requirements of coastal cities with inadequate alternative sources of water will be met by adopting appropriate technologies that allow for the use of ocean water. 3. All the rivers of Himalayan origin will be linked to the rivers of peninsular India. 4. The expenses incurred by farmers for digging bore-wells and for installing motors and pump-sets to draw groundwater will be completely reimbursed by the Government. Select the correct answer using the codes given below :

  1. (a)1 only
  2. (b)1 and 2 only
  3. (c)3 and 4 only
  4. (d)1, 2, 3 and 4
Show answerHide answer

Official answer(b) 1 and 2 only

2012 · Q50Environment & EcologyClimate Change & Greenhouse Gasesmoderate

The acidification of oceans is increasing. Why is this phenomenon a cause of concern? 1. The growth and survival of calcareous phytoplankton will be adversely affected. 2. The growth and survival of coral reefs will be adversely affected. 3. The survival of some animals that have phytoplanktonic larvae will be adversely affected. 4. The cloud seeding and formation of clouds will be adversely affected. Which of the statements given above is/are correct?

  1. (a)1, 2 and 3 only
  2. (b)2 only
  3. (c)1 and 3 only
  4. (d)1, 2, 3 and 4
Show answerHide answer

Official answer(a) 1, 2 and 3 only