PMS · PMS · 2026
Solved PMS 2026 GK practice set Q451-500 from the Sir Adnan 1000 one-liners booklet - pollution, greenhouse effect, climate change, SDGs and environmental conventions MCQs with verified answers and explanations. A practice set for PMS Screening preparation, not an official past paper.
Paper Snapshot
Questions
49
Time
49
Minutes
Subjects
1
Topics
1
Read mode shows correct answers. Attempt mode hides answers, starts timer, and shows your result after submission.
About this paper
A Sir Adnan one-liner booklet headed '1000- PMS 2026 GK / ONE-LINER (Origionally PMS SCREENING Syllabus BREAKDOWN)' from the monster-data 'PMS SCREENING 2026 GK UPDATED' pack (74 pp). This file publishes Q451-500 only, in the standard MCQ format with verified answers and explanations: 49 published, 1 dropped as an internal duplicate of an item already published from the same booklet (printed Q472 'Renewable energy reduces?' = printed Q184 in the Q151-200 file, verbatim stem; the two printings give different one-liner answers, Q184 'Environmental impact' vs this printing 'Fossil fuel dependence', both defensible readings, so the item is cross-linked to Q184, not re-extracted), 0 corrections, 2 note flags (Q452 water vapour as the most abundant greenhouse gas vs CO2 as the major anthropogenic gas; Q480 tsunami warning systems detecting the seismic event and confirming waves via buoys). No other item in Q451-500 repeats an item already published from the same booklet (checked stem by stem at >=0.8 token similarity against all earlier 1000-booklet files, plus manual fact review). Q501-1000 remain for later runs; the booklet PDF stays in work/pms-screening/.
Paper Controls
Subject 1
Topic Section
49 solved MCQs shown directly below
Correct Answer: Smoke, dust, gases & industrial emissions
Air pollution is caused by smoke, dust, gases and industrial emissions released into the air.
Correct Answer: Carbon dioxide (CO2)
Carbon dioxide (CO2) is the major greenhouse gas in exam one-liners, as the leading human-driven greenhouse gas.
Correct Answer: Smoke & fog
Smog is a mixture of smoke and fog, forming a hazy, polluted air layer over cities.
Correct Answer: Buildings, crops & aquatic life
Acid rain damages buildings (stone and metal corrosion), crops and aquatic life in lakes and rivers.
Correct Answer: Traffic, industries & construction
Noise pollution is caused by traffic, industries and construction activity, the main sources of loud urban noise.
Correct Answer: Increased UV radiation
Ozone depletion leads to increased UV radiation reaching the Earth, since the ozone layer absorbs ultraviolet light.
Correct Answer: Climate patterns & sea levels
Global warming affects climate patterns and sea levels, through changing weather and melting ice.
Correct Answer: Trapping of heat in atmosphere
The greenhouse effect is the trapping of heat in the atmosphere by greenhouse gases.
Correct Answer: Land degradation
Desertification increases land degradation, turning productive dry land into desert-like land.
Correct Answer: Carbon absorption & biodiversity
Deforestation reduces carbon absorption (fewer trees take in CO2) and biodiversity (habitats are lost).
Correct Answer: Drinking water quality
Water pollution reduces drinking water quality, making water unsafe for human use.
Correct Answer: Excess nutrients in water
Eutrophication is caused by excess nutrients (nitrates and phosphates) in water, triggering algal blooms.
Correct Answer: Flood control & water purification
Wetlands help in flood control and water purification: they store floodwater and filter pollutants.
Correct Answer: Resource depletion & waste
Recycling reduces resource depletion and waste, by reusing materials instead of extracting new ones.
Correct Answer: Organic waste into fertilizer
Composting converts organic waste into fertilizer (compost) through decomposition by microbes.
Correct Answer: CO2 & pollutants
Fossil fuel burning releases CO2 and pollutants (including sulfur and nitrogen oxides and particulates).
Correct Answer: Soil conservation & biodiversity
Sustainable agriculture promotes soil conservation and biodiversity, keeping soil healthy and habitats intact.
Correct Answer: Aquatic biodiversity
Overfishing affects aquatic biodiversity, depleting fish stocks and disturbing marine food webs.
Correct Answer: Oil spills & plastic waste
Marine pollution is caused by oil spills and plastic waste, the leading pollutants of oceans and seas.
Correct Answer: Human CO2 emissions
A carbon footprint measures human CO2 emissions, usually as tonnes of CO2 equivalent per person or activity.
Correct Answer: Environmental impact
Energy conservation reduces environmental impact, by cutting the fuel burned and emissions produced.
Correct Answer: Organic waste
Biogas is produced from organic waste, by anaerobic digestion of plant and animal matter.
Correct Answer: April 22
Earth Day is observed on April 22 every year.
Correct Answer: June 5
World Environment Day is observed on June 5 every year.
Correct Answer: Polar regions
Global warming causes ice melting in the polar regions, in the Arctic and Antarctica.
Correct Answer: Coastal areas
Rising sea levels threaten coastal areas, with flooding, erosion and saltwater intrusion.
Correct Answer: Water scarcity & crop failure
Drought leads to water scarcity and crop failure, as rainfall and water supplies fall short.
Correct Answer: Heavy rainfall & poor drainage
Flooding results from heavy rainfall and poor drainage, when water cannot run off fast enough.
Correct Answer: Undersea earthquakes
Tsunami warning systems detect undersea earthquakes, the seismic events that can generate tsunamis.
Correct Answer: Clean water & sanitation
Sustainable Development Goal 6 relates to clean water and sanitation for all.
Correct Answer: Climate action
SDG 13 relates to climate action: urgent action to combat climate change and its impacts.
Correct Answer: Affordable & clean energy
SDG 7 relates to affordable and clean energy for all.
Correct Answer: Treated before discharge
Industrial wastewater must be treated before discharge, to remove pollutants before it reaches rivers.
Correct Answer: Pollution level in air
The air quality index measures the pollution level in air, summarising key pollutants in one scale.
Correct Answer: Capturing & storing CO2
Carbon sequestration involves capturing and storing CO2, keeping it out of the atmosphere.
Correct Answer: 1997
The Kyoto Protocol was adopted in 1997 (in Kyoto, Japan) and entered into force in 2005.
Correct Answer: Below 2°C
The Paris Agreement aims to limit temperature rise to well below 2°C above pre-industrial levels, pursuing 1.5°C.
Correct Answer: CFCs to protect ozone layer
The Montreal Protocol regulates CFCs to protect the ozone layer, phasing out ozone-depleting substances.
Correct Answer: Biodiversity loss & climate change
Forest conservation prevents biodiversity loss and climate change, by keeping habitats and carbon stores intact.
Correct Answer: 5.6
Rain is considered acidic below pH 5.6, since unpolluted rain is naturally about pH 5.6 from dissolved CO2.
Correct Answer: Lead, Mercury & Cadmium
Heavy metals polluting water include lead, mercury and cadmium, all toxic even in small amounts.
Correct Answer: Toxin concentration up the food chain
Biomagnification increases toxin concentration up the food chain, as predators accumulate the toxins of their prey.
Correct Answer: Rainfall & rivers
Renewable water sources include rainfall and rivers, replenished by the water cycle.
Correct Answer: Water table depletion
Overuse of groundwater leads to water table depletion, as pumping exceeds natural recharge.
Correct Answer: Conserve soil & water
Watershed management aims to conserve soil and water in a river basin, controlling erosion and runoff.
Correct Answer: Afforestation & soil conservation
Desertification can be reduced by afforestation and soil conservation, restoring vegetation and holding soil.
Correct Answer: Reduce pollution & resource use
Recycling of plastics helps reduce pollution and resource use, by reusing plastic instead of making new plastic.
Correct Answer: Soil fertility
Compost helps in soil fertility, adding organic matter and nutrients to the soil.
Correct Answer: Projects affecting environment
An Environmental Impact Assessment (EIA) is conducted for projects affecting the environment, before approval.
Source & verification
Built by GK360 from verified bank questions — every answer rechecked before publishing. Where the source printed no options, the answer options were prepared by GK360; the questions and correct answers are the verified originals.
Questions
No. It is part 10 (Q451-500) of a Sir Adnan 1000 one-liner practice booklet prepared for PMS Screening 2026. It is published as paperType 'practice', never as a past paper, and the year 2026 is the booklet's label, not a claimed exam session.
Smog is a mixture of smoke and fog. Eutrophication is caused by excess nutrients (nitrates and phosphates) in water, triggering algal blooms.
SDG 6 is clean water and sanitation, SDG 7 is affordable and clean energy, and SDG 13 is climate action.
The source prints question + answer only, no options; the options are authored distractors under the 2026-10-28 single-format decision, so optionsSource is 'authored'.
Explore GK360
Use these important GK360 sections to prepare for PPSC, FPSC, one paper exams, subject-wise MCQs, solved past papers and current affairs.
