Environment topic analysis
Pollution & Waste UPSC PYQs
This cluster examines air, water, chemical, industrial, and agricultural pollution alongside waste rules, remediation, health effects, and control technologies. This live collection contains 28 classified questions across 12 exam years, from 2014 to 2025.
Year-by-year frequency
Counts show how many questions in this library were assigned to the category in each represented exam year. A zero is not implied for omitted years, and frequency alone is not a prediction of a future paper.
Source topic labels in this cluster
Recurrent concept labels
Representative solved questions
The sample prioritizes different years and removes repeated prompt text. Open a question to see its options, independent answer, and explanation.
UPSC 2025 · Environment
Consider the following : I. Cigarette butts II. Eyeglass lenses III. Car tyres How many of them contain plastic?
UPSC 2024 · Environment
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 fr...
UPSC 2023 · Environment
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 plants cause...
UPSC 2022 · Environment
Consider the following : 1. Carbon monoxide 2. Nitrogen oxide 3. Ozone 4. Sulphur dioxide Excess of which of the above in the environment is/are cause(s) of acid rain ?
UPSC 2021 · Environment
'Triclosan', considered harmful when exposed to high levels for a long time, is most likely present in which of the following?
UPSC 2020 · Environment
Steel slag can be the material for which of the following? 1. Construction of base road 2. Improvement of agricultural soil 3. Production of cement Select the correct answer u...
UPSC 2019 · Environment
In India, the use of carbofuran, methyl parathion, phorate and triazophos is viewed with apprehension. These chemicals are used as
UPSC 2018 · Environment
Which of the following is/are the possible consequence/s of heavy sand mining in riverbeds ? 1. Decreased salinity in the river 2. Pollution of groundwater 3. Lowering of the...
UPSC 2017 · Environment
Biological Oxygen Demand (BOD) is a standard criterion for
UPSC 2016 · Environment
In the cities of our country, which among the following atmospheric gases are normally considered in calculating the value of Air Quality Index? 1. Carbon dioxide 2. Carbon mo...
How this page is built
Topic and concept labels are AI-assisted enrichment, not official UPSC classifications. We map them into a conservative editorial taxonomy using deterministic label rules, publish a category only when it has at least 10 questions across at least three exam years, and keep ambiguous records out of topic pages. Counts update with the question bank. See the full methodology and correction policy.