Federal Public Service Commission
CSS General Science & Ability | Repeating Questions
Competitive Examination-2016-2025
A review of the past decade’s CSS General Science & Ability papers shows a clear pattern of thematic consistency and repetition. Environmental issues such as climate change, pollution, and global warming appear almost every year. Human biology topics like vaccines, hepatitis, and nutrition are frequently tested, while technology-related subjects including artificial intelligence, GPS, and computer fundamentals have become regular features. Physics and space science also recur with minor variations. The analytical mathematics section follows a stable structure annually. Overall, the trend suggests that success lies in mastering core concepts rather than expecting entirely new or unpredictable topics.
SUBJECTIVE
THEME 1: Environmental Science & Climate Change
Topics Covered:
• Global warming & greenhouse effect
• Ozone depletion
• Acid rain
• Water pollution & smog
• Solid waste management
• Renewable vs non-renewable energy
• Climate variation
• Wildfire
• Deforestation
• Paris Agreement / Kyoto Protocol
• Greenhouse gases
2016
• Q2(A): What were the main objectives of Clean Development Mechanism? Also
explain the reasons for the criticism on Kyoto Protocol by developed countries.
• Q9(B): Comment, Green House Effect is blessing. Also discuss Enhanced Green
House Effect and its relation with global warming.
2017
• Q2(A): What are the factors responsible for environmental pollution?
• Q2(C): What do you mean by Ozone depletion and how we can prevent its depletion?
• Q2(D): What is Acid Rain and how it is produced? Describe dangers.
2018
• Q4(A): What is Acid Rain? Causes and prevention.
• Q4(B): What is Water Pollution? Causes and measurement methods.
• Q4(C): Write a comprehensive note on Smog.
2019
• Q2(D): Why are scientists worried about the increase of CO2 in atmosphere?
• Q5(A): What does Ozone depletion mean and how can we protect the ozone layer?
2020
• Q3(A): What are pesticides? Why persistent pesticides are more lethal?
• Q4(B): Organic particulate matter in atmosphere.
• Q4(A): Segments of atmosphere & Earth radiation balance.
2022
• Q4(A): Define Water Pollution. Indicators & drinking water standards.
• Q4(C): Negative effects of Global Warming in Pakistan.
• Q3(D): Solid Waste Management issues in Pakistan.
2023
• Q4(A): Difference between fog and smog.
• Q2(D): What is Wildfire? Causes and prevention.
2024
• Q3(B): Role of Remote sensing and GIS in environmental science.
• Q4(C): Drinking water standards & heavy metals.
2025
• Q4(A): What is deforestation? Disadvantages.
• Q4(B): How water pollution is produced?
THEME 2: Human Biology & Health Sciences
Topics Covered:
• Vaccines & immunization
• Hepatitis
• Polio
• Dengue
• Vitamins
• Liver & pancreas
• Cholesterol
• Malnutrition
• Blood groups
• Digestion
• Kidney & urine formation
2016
• Q4(A): What are vaccines? Classify and discuss DNA vaccines.
• Q4(B): Causative organism & vector of dengue.
• Q5(A): ‘Liver is chief chemist’ comment.
• Q5(B): What is Cholesterol? Importance & dangers.
2017
• Q3(A): Causes of Heart Attack.
• Q3(D): Significance of Vitamins.
2018
• Q3(A): Causes and prevention of Polio.
• Q3(C): Carbohydrates digestion.
• Q3(D): Cell structure differences.
2020
• Q5(A): What is Hepatitis? Types and prevention.
2021
• Q3: Cells, tissues, organs; transpiration; double circulation.
• Q5(A): Define malnutrition.
2022
• Q3(A): Vaccination and types.
• Q3(B): Polio symptoms and prevention.
2023
• Q3(D): Hepatitis types, causes, prevention.
2024
• Q4(A): Role of Carbohydrates and Vitamins.
• Q4(B): Functioning of Liver and Pancreas.
2025
• Q3(B): Capillaries structure and function.
• Q3(C): Hepatitis types and prevention.
THEME 3: Computer Science, IT & AI
Topics Covered:
• Artificial Intelligence
• Computer memory
• RAM vs ROM
• OSI model
• GPS
• Fiber optics
• Networks
• Hardware vs software
• Communication satellites
2016
• Q3(A): Short note on Artificial Intelligence.
• Q3(B): Fibre Optics & GPS.
2017
• Q5(A): Differentiate between RAM and ROM.
• Q5(C): Computer block diagram.
2018
• Q4(D): What is Artificial Intelligence?
• Q5(A): Data storage on Hard Disk.
• Q5(B): Optical Fiber construction.
2020
• Q5(C): OSI Model and layers.
• Q5(D): What is GPS? How it works?
2021
• Q5(C): Computer memory types.
• Q5(D): Communication satellites.
2022
• Q5(B): Optical Fiber communication.
• Q5(D): Artificial Intelligence and Robotics.
2024
• Q5(B): Difference between software and hardware.
THEME 4: Physics & Space Science
Topics Covered:
• Earthquakes
• Tsunami
• Black holes
• Universe origin
• Remote sensing
• Kepler laws
• Electromagnetic radiations
• Gamma rays
• Earth rotation & revolution
Repeated heavily in:
• 2016 (Earthquake, Tsunami, Gamma Rays)
• 2018 (Universe, Black Hole, Dark Energy)
• 2020 (Earthquake types, Wind patterns)
• 2021 (Origin of Universe, Star vs Planet)
• 2023 (Black Hole, EM Radiations)
• 2024 (Earthquake waves, Radioactivity)
• 2025 (Rotation & Revolution, EM radiations)
THEME 5: Mathematics & Analytical Ability (SECTION-II)
Topics Covered:
• Algebra
• Probability
• Series completion
• Ratio & proportion
• Geometry
• Mensuration
• Coding-decoding
• Work & time
• Age problems
• Graph plotting
This section is 100% recurring every year (2016–2025). Pattern:
• 1 Work/Time Question
• 1 Ratio Question
• 1 Series/Coding Question
• 1 Geometry/Area Question
• 1 Probability Question