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UPSC Civil Service Prelims Paper I 2024 (General Studies)
With reference to perfluoroalkyl and polyfluoroalkyl substances (PFAS) that are used in making many consumer products, consider the following statemen...
UPSC Civil Service Prelims Paper I 2024 (General Studies)
Which one of the following is the exhaust pipe emission from Fuel Cell Electric Vehicles, powered by hydrogen?
UPSC Civil Service Prelims Paper I 2023 (General Studies)
Consider the following:
1. Aerosols
2. Foam agents
3. Fire retardants
4. Lubricants
In the making of how many of the above are hydroflu...
UPSC Civil Service Prelims Paper I 2022 (General Studies)
With reference to India, consider the following statements :
1. Monazite is a source of rare earths.
2. Monazite contains thorium.
3. Monazite occu...
UPSC Civil Service Prelims Paper I 2022 (General Studies)
With reference to polyethylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements :
1. Its fibres...
UPSC Civil Service Prelims Paper I 2021 (General Studies)
Water can dissolve more substances than any other liquid because
UPSC Civil Service Prelims Paper I 2021 (General Studies)
Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?