Download CSS 2026 General Science and Ability Paper – CSS Past Paper 2026
CSS General Science and Ability Paper 2026
The CSS General Science and Ability Paper 2026 tested scientific understanding and analytical thinking together. First, MCQs checked basic concepts. Then, subjective questions measured explanation skills. Moreover, candidates had to connect science with real life. Therefore, preparation needed clarity, practice, and smart revision.
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Q.2- Fertilizers, Root Systems, Plastics, and Food Deterioration
Q.2(a) Excessive Fertilizer Use and Soil–Water Quality
Excessive fertilizer use harms both soil and groundwater. When farmers apply too much fertilizer, nitrates seep into underground water. As a result, drinking water becomes unsafe. Moreover, soil loses its natural balance and fertility over time. This also causes algal blooms in rivers and lakes. Therefore, controlled fertilizer use and organic alternatives are necessary to protect agriculture and public health.
Q.2(b) Structural Organization of Plant Root Systems
Plants have different root systems, such as taproots and fibrous roots. These roots absorb water, store food, and support the plant. For example, trees usually have deep taproots, while grasses have fibrous roots. Besides this, some plants show special roots like aerial or storage roots. Understanding root structure helps in improving crop yield and soil conservation.
Q.2(c) Plastic Pollution and Biodegradable Plastics
Plastic pollution damages land, oceans, and wildlife. Ordinary plastics take hundreds of years to decompose. Consequently, ecosystems suffer badly. Biodegradable plastics break down faster and reduce waste load. However, they are not a complete solution. Proper recycling and reduced plastic use are also required. Governments must promote eco-friendly materials to control global plastic pollution.
Q.2(d) Causes of Food Deterioration
Food spoils due to biological, chemical, and physical factors. Bacteria and fungi cause biological decay. Chemical reactions lead to rancidity, while physical damage affects texture. Poor storage increases losses. Hence, refrigeration, hygienic handling, and proper packaging are important. Preventing food deterioration improves food security and reduces waste.
Q.3- Disaster Management, Avalanches, Fluids, and Solar Power
Q.3(a) Disaster Risk Management
Disaster Risk Management includes mitigation, preparedness, response, and recovery. Mitigation reduces future risks. Preparedness trains communities. Response provides emergency help. Recovery rebuilds lives. Together, these steps minimize damage from floods, earthquakes, and storms. Effective planning saves lives and resources.
Q.3(b) Avalanches and Monitoring Technologies
Avalanches occur in snowy mountains due to unstable snow layers. Triggers include temperature rise and vibrations. Today, satellites, drones, and sensors help monitor avalanche-prone areas. Early warning systems reduce casualties. Modern technology plays a vital role in mountain safety.
Q.3(c) Fluid Diversity and Cellular Signaling
Fluids differ in density and composition. These variations affect membrane fluidity in cells. When membranes change, signaling mechanisms change as well. This influences how cells communicate. Therefore, fluid properties are important in biological processes and medical research.
Q.3(d) Solar Power and Corrosion
Solar panels convert sunlight into electricity. However, corrosion reduces efficiency. Dust, moisture, and temperature changes damage surfaces. Protective coatings and regular cleaning improve performance. Solar energy remains a clean and renewable option, especially for sunny countries like Pakistan.
Q.4- Hydroelectric Power, Earth’s Water, Edge Cities, Acoustics, and DSS
Q.4(a) Hydroelectric Power and Its Limits
Hydroelectric power uses flowing water to generate electricity. Although it is renewable, environmental and geographical limits exist. Dams disturb ecosystems and require suitable terrain. Hence, careful planning is essential.
Q.4(b) Earth’s Water Cycle and Freshwater Distribution
Earth’s water circulates through evaporation, condensation, and precipitation. Most water is salty. Only a small amount is fresh and usable. Glaciers and groundwater store major portions. Conservation is necessary due to increasing demand.
Q.4(c) Edge Cities and Urban Growth
Edge cities develop outside main urban centers. They grow due to business expansion and housing needs. However, they also create traffic and planning challenges. Balanced development is important.
Q.4(d) Acoustics and Sound Control
Acoustics studies sound behavior. Absorption and insulation help reduce noise pollution. These methods improve living and working environments.
Q.4(e) Decision Support Systems
Decision support systems assist managers using data analysis. They improve planning, forecasting, and policymaking. Organizations rely on DSS for better results.
Q.5- Networks, Electromagnetics, Digital Platforms, and GPS
Q.5(a) Cellular Networks and Mobile Connectivity
Cellular networks use connected cells to provide mobile service. Devices switch towers while moving. This ensures continuous communication.
Q.5(b) Electromagnetic Theory and Quantum Mechanics
Classical wave theory failed to explain some experiments. Quantum mechanics solved these issues by introducing energy packets. This changed modern physics.
Q.5(c) Digital Marketing Platforms
Social media and websites help businesses reach customers. These platforms increase visibility and sales. Digital marketing is now essential.
Q.5(d) GPS Working System
GPS uses satellites to locate positions on Earth. Signals from multiple satellites calculate exact coordinates. It supports navigation and mapping worldwide.
Download CSS General Science and Ability Past Paper 2026
