UKPSC 2023 Paper SCIENCE

Points to Remember: Active immunity involves the body’s own immune system producing antibodies. Passive immunity involves receiving pre-made antibodies from an external source. Active immunity is long-lasting, while passive immunity is temporary. Both types of immunity are crucial for protecting against infectious diseases. Introduction: Immunity is the body’s ability to resist infection and disease. This … Read more Explain the difference between active and passive immunity.

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Points to Remember: Speed: Digital computers process information incredibly fast. Accuracy: They perform calculations with high precision and minimal errors. Storage Capacity: They can store vast amounts of data. Automation: They can execute complex tasks automatically. Versatility: They can be used for a wide range of applications. Reliability: Modern digital computers are designed for high … Read more Mention the features of digital computers.

Points to Remember: Definition of a watershed. Types of watersheds. Importance of watersheds for water resources, ecosystems, and human society. Threats to watersheds and their management. Introduction: A watershed, also known as a drainage basin or catchment area, is an area of land where all the water that falls on it drains off to a … Read more Define watershed and mention its importance.

Points to Remember: Definition and Objectives of Biosphere Reserves Zoning of Biosphere Reserves Functions of Biosphere Reserves Examples of Biosphere Reserves Importance and Challenges Introduction: The concept of a Biosphere Reserve is rooted in the growing global awareness of the need to conserve biodiversity and promote sustainable development. UNESCO’s Man and the Biosphere Programme (MAB) … Read more What is the concept of ‘Biosphere Reserve’?

Points to Remember: The crucial role of the immune system in protecting against disease. The applications of immunology in disease prevention and treatment. The economic and societal impact of immunological advancements. The ethical considerations surrounding immunological research and applications. Introduction: Immunology, the study of the immune system, is a cornerstone of modern biology and medicine. … Read more Explain the importance of immunology.

Points to Remember: Nuclear Fission: Splitting of a heavy atomic nucleus into smaller nuclei. Nuclear Fusion: Combining of two light atomic nuclei to form a heavier nucleus. Energy release mechanism: Fission releases energy by reducing mass; fusion releases energy by converting mass into energy. Byproducts: Fission produces radioactive waste; Fusion produces minimal radioactive waste. Applications: … Read more Differentiate between nuclear fission and nuclear fusion.

Points to Remember: Surface tension is the tendency of liquid surfaces to shrink into the minimum surface area possible. Temperature affects the intermolecular forces within a liquid, directly impacting surface tension. Generally, surface tension decreases with increasing temperature. Introduction: Surface tension is a crucial property of liquids, arising from the cohesive forces between liquid molecules. … Read more Explain the effect of temperature on the surface tension of liquids.

Points to Remember: GPS technology’s core function is precise location determination. Applications span numerous sectors, from navigation to scientific research. Accuracy and reliability are crucial for effective application. Ethical considerations and potential misuse need addressing. Introduction: The Global Positioning System (GPS) is a satellite-based radionavigation system operated by the United States Department of Defense. It … Read more Mention the applications of the Global Positioning System (GPS).

Points to Remember: Electromagnetic waves are a form of energy that travels through space. They are transverse waves, meaning their oscillations are perpendicular to their direction of travel. They have a wide range of frequencies and wavelengths. They exhibit properties of both waves and particles. Introduction: Electromagnetic (EM) waves are disturbances that propagate through space … Read more What are electromagnetic waves? Mention their properties.