Prelims 2018 • Paper 1 (GS) • Q.57

Q.56 Q.58

Q.56 Q.58

Prelims • Paper 1 (GS) • 2018 • Q.57

Environmental ecology, Bio-diversity and Climate Change

Consider the following statements :

The Earth's magnetic field has reversed every few hundred thousand years.

When the Earth was created more than 4000 million years ago, there was 54% oxygen and no carbon dioxide.

When living organisms originated, they modified the early atmosphere of the Earth.

2018 Prelims • Paper 1 (GS)

Q.56 Q.58

Syllabus Connection

General issues on Environmental ecology, Bio-diversity and Climate Change - that do not require subject specialization. (Prelims)

NCERT Connection

Ch.2: The Origin and Evolution of the Earth

Geography • Class 11 • Class 11 World Physical Geography

Ch.8: Composition and Structure of Atmosphere

Geography • Class 11 • Class 11 World Physical Geography

Related PYQs in Environmental ecology, Bio-diversity and Climate Change

2026•Prelims•Paper 1 (GS)

Which one of the following is the first Plan Vivo certified Reducing Emissions from Deforestation and Forest Degradation (REDD+) project in India?

2022•Prelims•Paper 1 (GS)

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

2017•Prelims•Paper 1 (GS)

According to the Wildlife (Protection) Act, 1972, which of the following animals cannot be hunted by any person except under some provisions provided by law? 1. Gharial 2. Indian wild ass 3. Wild buffalo Select the correct answer using the code given below:

2017•Prelims•Paper 1 (GS)

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: