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
91
The CBAM transitional methodology emphasizes:
Answer:
Emissions reporting and data systems
The 2023–2025 phase builds robust reporting before financial obligations begin in 2026. ([EcoVadis](https://ecovadis.com/regulations/carbon-border-adjustment-mechanism-cbam/?utm_source=chatgpt.com "Carbon Border Adjustment Mechanism (CBAM) | EU Import ..."))
92
The plastics treaty timeline in 2025 was characterized by:
Answer:
Extra session scheduled then talks failed again in August
After Busan, UNEP set Geneva INC-5.2; however, negotiations ended without agreement. ([Reuters](https://www.reuters.com/sustainability/climate-energy/un-sets-date-extra-session-finalize-plastics-treaty-2025-03-03/?utm_source=chatgpt.com "UN sets date for extra session to finalize plastics treaty"))
93
Which is **not** part of the COP29 climate-finance language?
Answer:
OP29 climate-finance language?
The outcome increased ambition vs. the USD 100 bn pledge; reactions varied widely. ([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 ..."))
94
Which country’s grid decarbonization progress in 2025 was noted for cutting power-sector emissions below prior drought years?
Answer:
Brazil
Wind and solar growth reduced reliance on fossil generators even as hydro output sagged. ([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"))
95
The 2025 IEA hydrogen outlook highlighted which market dynamic?
Answer:
Natural gas got cheaper in some regions, widening cost gaps
The economics favored fossil-based hydrogen in the near term, slowing low-carbon uptake. ([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"))
96
The High Seas Treaty ratification tracker is maintained by:
Answer:
y:
The Alliance provides live updates on signatures/ratifications and advocacy resources. ([High Seas Alliance](https://highseasalliance.org/treaty-ratification/?utm_source=chatgpt.com "High Seas Treaty Ratification Tracker"))
97
Which sphere saw record renewable additions in 2024 per REN21 GSR 2025?
Answer:
Power sector
The >700 GW added were overwhelmingly in electricity generation capacity. ([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"))
98
A key “implementation risk” flagged for the EU Nature Restoration Law is:
Answer:
Lack of national restoration plans and funding
Commentaries stress that delivery hinges on Member States’ plans, financing, and monitoring frameworks. ([CAN Europe](https://caneurope.org/content/uploads/2024/09/Nature-Restoration-Law-Essential-Progress-in-Biodiversity-and-Climate-Action-Implementation-will-be-key-v2-1.pdf?utm_source=chatgpt.com "Nature Restoration Law: Essential Progress in Biodiversity ..."))
99
CBAM will fully cover 100% of embedded emissions for covered goods starting:
Answer:
BAM will fully cover 100% of embedded emissions for covered goods starting:
Free allocations phase-out from 2026 to 2033; from 2034, embedded emissions are fully covered by CBAM certificates. ([Herbert Smith Freehills](https://www.hsfkramer.com/insights/key-topics/carbon-markets/eu-carbon-border-adjustment-mechanism?utm_source=chatgpt.com "EU Carbon Border Adjustment Mechanism – What you ..."))
100
Which statement about INC-5.2 media reporting is accurate (Aug 2025)?
Answer:
Failure was attributed to disagreements over caps and chemicals of concern
Multiple outlets cited divisions, with some producers opposing caps and others seeking stronger upstream controls. ([AP News](https://apnews.com/article/e73090282a22be7ff5979ea2d648dc10?utm_source=chatgpt.com "No end in sight to plastic pollution crisis as treaty negotiations in Geneva fail"))