Correct answer: (c) I, II and III
Explanation
- A
I and III only
I and III only. That drops the heat-trapping line, which is keyed.
- B
I and II only
I and II only. That drops the greenhouse-gas line.
- C
I, II and III
I, II and III. Without the atmosphere the surface would freeze; trapped heat sets the average temperature; CO2 and similar gases absorb and trap radiation.
- D
II and III only
II and III only. That drops I.
Summary. Official Set A key is (c) all three. The atmosphere keeps Earth habitable: without it the surface would be far colder (I); absorbed and trapped heat sets the planetary average (II); greenhouse gases such as CO2 are good at absorbing and trapping long-wave radiation (III). All three are correct.
PYQ trend
When UPSC asked this
Related PYQs from other years, newest first. Open a question to read it.
-
2024 · Q1 · General Studies · 2 marks
Consider the following statements : Statement-I : The atmosphere is heated more by incoming solar radiation than by terrestrial radiation. Statement-II : Carbon dioxide and other greenhouse gases in the atmosphere are good absorbers of long wave radiation. Which one of the following is correct in respect of the above statements ? -
2024 · Q7 · General Studies · 2 marks
Consider the following statements : Statement-I: Rainfall is one of the reasons for weathering of rocks. Statement II: Rain water contains carbon dioxide in solution. Statement-III: Rain water contains atmospheric oxygen. Which one of the following is correct in respect of the above statements ? -
2023 · Q62 · General Studies · 2 marks
With reference to the Earth's atmosphere, which one of the following statements is correct? -
2023 · Q64 · General Studies · 2 marks
Consider the following statements : Statement-I The temperature contrast between continents and oceans is greater during summer than in winter. Statement-II The specific heat of water is more than that of land surface. Which one of the following is correct in respect of the above statements? -
2022 · Q81 · General Studies · 2 marks
Consider the following statements: 1. High clouds primarily reflect solar radiation and cool the surface of the Earth. 2. Low clouds have a high absorption of infrared radiation emanating from the Earth's surface and thus cause warming effect. Which of the statements given above is/are correct? -
2021 · Q62 · General Studies · 2 marks
With reference to the water on the planet Earth, consider the following statements: 1. The amount of water in the rivers and lakes is more than the amount of groundwater. 2. The amount of water in polar ice caps and glaciers is more than the amount of groundwater. Which of the statements given above is/are correct? -
2018 · Q57 · General Studies · 2 marks
Consider the following statements: 1. The Earth's magnetic field has reversed every few hundred thousand years. 2. When the Earth was created more than 4000 million years ago, there was 54% oxygen and no carbon dioxide. 3. When living organisms originated, they modified the early atmosphere of the Earth. Which of the statements given above is/are correct? -
2017 · Q66 · General Studies · 2 marks
With reference to 'Indian Ocean Dipole (IOD)' sometimes mentioned in the news while forecasting Indian monsoon, which of the following statements is/are correct? 1. IOD phenomenon is characterised by a difference in sea surface temperature between tropical Western Indian Ocean and tropical Eastern Pacific Ocean. 2. An IOD phenomenon can influence an El Nino's impact on the monsoon. Select the correct answer using the code given below: