General Science/Everyday Science MCQs
Topic Notes: General Science/Everyday Science
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
101
What was a frequent critique of the COP29 finance outcome from Global South negotiators?
Answer:
It lacked clear grant-based finance and scale relative to needs
Analyses reported disappointment with the size and composition relative to adaptation/loss-and-damage requirements. ([Carbon Brief](https://www.carbonbrief.org/cop29-key-outcomes-agreed-at-the-un-climate-talks-in-baku/?utm_source=chatgpt.com "COP29: Key outcomes agreed at the UN climate talks in Baku"))
102
In 2025, which sector trend did IEA note as **not** meeting prior hype?
Answer:
Low-emissions hydrogen projects reaching FID
Only a small fraction reached final investment decision amid higher costs and policy uncertainty. ([Reuters](https://www.reuters.com/sustainability/climate-energy/iea-cuts-2030-low-emissions-hydrogen-production-outlook-by-nearly-quarter-2025-09-12/?utm_source=chatgpt.com "IEA cuts 2030 low-emissions hydrogen production outlook by nearly a quarter"))
103
The High Seas Treaty aims primarily to:
Answer:
Protect biodiversity beyond national jurisdiction
It creates tools for marine protected areas, environmental impact assessments, and benefit-sharing in the high seas. ([High Seas Alliance](https://highseasalliance.org/treaty-ratification/?utm_source=chatgpt.com "High Seas Treaty Ratification Tracker"))
104
Which statement about the EU Nature Restoration Law is **incorrect**?
Answer:
It is purely voluntary guidance
The law’s targets are binding and central to EU biodiversity/climate goals. ([Environment](https://environment.ec.europa.eu/topics/nature-and-biodiversity/nature-restoration-regulation_en?utm_source=chatgpt.com "The EU #NatureRestoration Law"))
105
In the IEA Renewables 2024 outlook, which technologies account for ~95% of additions to 2030?
Answer:
Solar PV + wind
Their cost competitiveness and scale underpin the forecast expansion. ([IEA](https://www.iea.org/reports/renewables-2024/electricity?utm_source=chatgpt.com "Electricity – Renewables 2024 – Analysis - IEA"))
106
What major electricity mix shift did Brazil record in Aug 2025?
Answer:
Wind + solar > one-third
Diversification cushioned a hydro shortfall without spiking fossil generation. ([AP News](https://apnews.com/article/13eef596389803e8b801f26e7888fb97?utm_source=chatgpt.com "Wind and solar power fuel over one-third of Brazil's electricity for first time"))
107
Which “new collective quantified goal” (NCQG) timeline was central at COP29?
Answer:
ollective quantified goal” (NCQG) timeline was central at COP29?
The COP29 outcome set a 2035 horizon for the USD 300 bn/yr figure and the broader USD 1.3 tn/yr mobilization aim. ([UNFCCC](https://unfccc.int/news/cop29-un-climate-conference-agrees-to-triple-finance-to-developing-countries-protecting-lives-and?utm_source=chatgpt.com "COP29 UN Climate Conference Agrees to Triple Finance ..."))
108
Which statement best captures INC-5.2 (Geneva) dynamics in Aug 2025?
Answer:
est captures INC-5.2 (Geneva) dynamics in Aug 2025?
Earth Negotiations Bulletin reported limited progress on finance and scope (production, chemicals), with no final text emerging. ([IISD Earth Negotiations Bulletin](https://enb.iisd.org/plastic-pollution-marine-environment-negotiating-committee-inc5.2-summary?utm_source=chatgpt.com "Summary report 5–15 August 2025 - Earth Negotiations Bulletin"))
109
According to IEA 2025 hydrogen analysis, which country holds the largest electrolyser manufacturing share?
Answer:
China
The IEA notes China produced ~65% of global electrolyser capacity, though overcapacity and logistics may curb exports. ([Reuters](https://www.reuters.com/sustainability/climate-energy/iea-cuts-2030-low-emissions-hydrogen-production-outlook-by-nearly-quarter-2025-09-12/?utm_source=chatgpt.com "IEA cuts 2030 low-emissions hydrogen production outlook by nearly a quarter"))
110
The **REN21 GSR 2025** highlighted which signal in the market?
Answer:
Record-high additions and accelerating deployment
The report credits policy support and cost declines for unprecedented capacity growth in 2024. ([REN21](https://www.ren21.net/gsr-2025/downloads/pdf/go/GSR_2025_GO_2025_Full_Report.pdf?utm_source=chatgpt.com "RENEWABLES 2025 GLOBAL STATUS REPORT"))