Environment

Biodiversity, climate change, pollution, protected areas. Filter by topic or year.

4 questions

2025 · Question 31 · Pollution
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?
Choose your answer(a)Both Statement II and Statement III are correct and both of them explain Statement I(b)Both Statement II and Statement III are correct but only one of them explains Statement I(c)Only one of the Statements II and III is correct and that explains Statement I(d)Neither Statement II nor Statement III is correct
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)
2025 · Question 44 · Pollution
Consider the following : I. Cigarette butts II. Eyeglass lenses III. Car tyres How many of them contain plastic?
Choose your answer(a)Only one(b)Only two(c)All the three(d)None
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)
2025 · Question 50 · Pollution
Consider the following statements : Statement I : Activated carbon is a good and an attractive tool to remove pollutants from effluent streams and to remediate contaminants from various industries. Statement II : Activated carbon exhibits a large surface area and a strong potential for adsorbing heavy metals. Statement III : Activated carbon can be easily synthesized from environmental wastes with high carbon content. Which one of the following is correct in respect of the above statements?
Choose your answer(a)Both Statement II and Statement III are correct and both of them explain Statement I(b)Both Statement II and Statement III are correct but only one of them explains Statement I(c)Only one of the Statements II and III is correct and that explains Statement I(d)Neither Statement II nor Statement III is correct
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)
2025 · Question 85 · Pollution
Artificial way of causing rainfall to reduce air pollution makes use of
Choose your answer(a)silver iodide and potassium iodide(b)silver nitrate and potassium iodide(c)silver iodide and potassium nitrate(d)silver nitrate and potassium chloride
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)

Consider the following : I. Cigarette butts II. Eyeglass lenses III. Car tyres How many of them contain plastic?

Artificial way of causing rainfall to reduce air pollution makes use of