UPSC Prelims 2023 Environment & Ecology

UPSC Prelims 2023 Environment & Ecology PYQs — start a timed practice test with explanations. 16 questions.

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Ancient History 1 Art & Culture 8 Economy 16 Environment & Ecology 16 Geography 15 Indian Polity 15 International Relations 10 Medieval History 3 Modern History 3 Science & Technology 10 Social Issues & Schemes 3

Question 1 Medium

Consider the following heavy industries : 1. Fertilizer plants 2. Oil refineries 3. Steel plants Green hydrogen is expected to play a significant role in decarbon...

Question 2 Medium

With reference to the role of biofilters in Recirculating Aquaculture System, consider the following statements: 1. Biofilters provide waste treatment by removing un...

Question 3 Medium

Consider the following statements: Statement I: Marsupials are not naturally found in India. Statement II: Marsupials can thrive only in montane grasslands with no...

Question 4 Hard

Which one of the following makes a tool with a stick to scrap insects from a hole in a tree or a log of wood?

Question 5 Medium

Invasive species Specialist Group' (that develops Global Invasive Species Database) belongs to which one of the following organizations?

Question 6 Hard

Consider the following: 1. Aerosols 2. Foam agents 3. Fire retardants 4. Lubricants In the making of how many of the above are hydrofluorocarbons used?

Question 7 Medium

Consider the following statements : Statement-I : According to the United Nation's 'World Water Development Report, 2022', India extracts more than a quarter of the ...

Question 8 Hard

Consider the following activities : 1. Spreading finely ground basalt rock on farmlands extensively 2. Increasing the alkalinity of oceans by adding lime 3. Capturing ...

Question 9 Hard

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: C...

Question 10 Medium

Consider the following statements regarding Mercury pollution : 1. Gold mining activity is a source of mercury pollution in the world. 2. Coal-based thermal power plan...

Question 11 Medium

Which of the following organisms perform waggle dance for others of their kin to indicate the direction and the distance to a source of their food?

Question 12 Easy

Consider the following statements : 1. In India, the Biodiversity Management committees are key to the realization of the objectives of Nagoya Protocol. 2. The Bio...