Create a custom practice set
Pick category, difficulty, number of questions, and time limit. Start instantly with your own quiz.
Generate QuizPick category, difficulty, number of questions, and time limit. Start instantly with your own quiz.
Generate QuizNo weekly quiz is published yet. Check the weekly page for the latest updates.
View Weekly PageFree practice for SSC, UPSC, Banking & Railway exams. No login required.
Answer: Designing chemical products and processes to reduce or eliminate hazardous substances
Green chemistry promotes sustainable practices like atom economy, safer solvents, renewable feedstocks, and energy efficiency to minimize environmental impact.
Answer: Formaldehyde
Formaldehyde, emitted from paints, adhesives, and furniture, is a VOC that can cause respiratory irritation and is classified as a carcinogen.
Answer: Chemical precipitation, ion exchange, or adsorption
These treatment methods convert dissolved metals into insoluble forms or bind them to media for removal, preventing aquatic toxicity.
Answer: SO2 + H2O → H2SO4 and NOx + H2O → HNO3
Sulphur dioxide and nitrogen oxides from fossil fuel combustion react with atmospheric moisture to form sulfuric and nitric acids, causing acid rain.
Answer: Ground-level ozone
Photochemical smog forms when sunlight triggers reactions between NOx and VOCs, producing ozone, PAN, and other secondary pollutants harmful to health.
Answer: Improved public health, reduced emissions, and enhanced livability
Active transport encourages physical activity, lowers greenhouse gases, reduces noise, and creates people-friendly urban spaces.
Answer: Source segregation, recycling, composting, and scientific landfilling
Integrated waste management prioritizes waste reduction, resource recovery, and safe disposal to minimize environmental and health impacts.
Answer: Traffic, construction, and industrial activities
Urban noise pollution from vehicles, machinery, and events can cause health issues like stress, sleep disturbance, and hearing impairment.
Answer: Creating compact, walkable, mixed-use communities centered around public transport nodes
TOD reduces vehicle dependence, lowers emissions, and enhances accessibility by integrating land use and transport planning around transit stations.
Answer: Integrated public transport, green spaces, and waste management systems
Sustainable cities prioritize compact design, multimodal transport, resource efficiency, and livability to reduce ecological footprint and enhance quality of life.
Answer: Tailoring messages to audience values, culture, and context
Audience-centered communication that resonates with local beliefs and priorities is more likely to inspire understanding, attitude change, and action.
Answer: Enhancing visitor understanding, appreciation, and support for conservation
Interpretation through signage, guides, and exhibits connects visitors emotionally and intellectually to nature, fostering stewardship and responsible behavior.
Answer: Practicing the 3Rs: Reduce, Reuse, Recycle
Adopting the 3Rs minimizes waste generation, conserves resources, and reduces pollution, contributing to sustainable consumption patterns.
Answer: Integrating principles, values, and practices of sustainable development into all aspects of education
ESD empowers learners to make informed decisions and take responsible actions for environmental integrity, economic viability, and a just society.
Answer: Developing critical thinking, values, and action competence for sustainability
Environmental education aims to foster awareness, knowledge, attitudes, skills, and participation to address environmental challenges effectively.
Answer: Improving energy efficiency in energy-intensive industries through market-based mechanisms
PAT, under the National Mission for Enhanced Energy Efficiency, sets specific energy consumption targets and allows trading of energy savings certificates.
Answer: Many services are non-market goods with no direct price
Services like pollination, climate regulation, or cultural values lack market prices, requiring complex methods like contingent valuation for estimation.
Answer: Coal
Coal is a fossil fuel formed over millions of years; its extraction and use deplete finite reserves, classifying it as non-renewable.
Answer: Tradable pollution permits (Cap-and-Trade)
Cap-and-trade sets an overall emissions limit and allows trading of permits, achieving reductions at lowest cost through market flexibility.
Answer: Costs or benefits of an economic activity that affect third parties not directly involved
Negative externalities like pollution impose costs on society not reflected in market prices, justifying policy interventions like taxes or regulations.