MPPSC MAINS 2020 Paper-III

Points to Remember: Weathering: Breakdown of rocks and minerals in situ (in their original place). Erosion: Transportation of weathered material from its original location. Agents: Both processes are driven by various agents like water, wind, ice, and biological activity. Scale: Weathering is a smaller-scale process compared to the larger-scale process of erosion. Introduction: Weathering and … Read more

Points to Remember: Minerals are naturally occurring inorganic solids. They have a definite chemical composition and a crystalline structure. They are essential for various industrial and biological processes. Mineral formation is influenced by geological processes. Introduction: The term “mineral” refers to a naturally occurring, inorganic solid with a definite chemical composition and a highly ordered … Read more

Points to Remember: Definition and characteristics of conventional and non-conventional energy sources. Examples of each type. Advantages and disadvantages of each type. Environmental impact considerations. Future prospects and policy implications. Introduction: Energy is the cornerstone of modern civilization, powering our homes, industries, and transportation systems. Historically, we have relied heavily on conventional energy sources, but … Read more

Points to Remember: Formation process involving sunlight, NOx, and VOCs. Primary pollutants and secondary pollutants involved. Health effects and environmental impacts. Mitigation strategies focusing on pollution control. Introduction: Photochemical smog, also known as Los Angeles-type smog, is a complex mixture of air pollutants formed through chemical reactions involving sunlight, nitrogen oxides (NOx), and volatile organic … Read more

Points to Remember: Ecosystem services are the benefits humans derive from ecosystems. Valuation of ecosystem services involves assigning monetary or non-monetary values to these benefits. Different valuation methods exist, each with strengths and weaknesses. Accurate valuation is crucial for effective environmental management and policy. Introduction: Ecosystem services are the myriad of benefits that humans freely … Read more

Points to Remember: Distinction between symbolic (hard) and sub-symbolic (soft) AI approaches. Strengths and weaknesses of each approach. Applications of both types of AI. Future trends and potential convergence. Introduction: Artificial intelligence (AI) is rapidly transforming various aspects of our lives. A crucial distinction within the field lies between “hard” and “soft” AI, reflecting different … Read more

Points to Remember: Core Function: Earth observation data acquisition, processing, and dissemination. Key Outputs: Geospatial data products and services for various sectors. National Importance: Supporting national development and resource management. Technological Expertise: Advanced remote sensing and GIS technologies. Introduction: The National Remote Sensing Centre (NRSC), located in Hyderabad, India, is a premier institution under the … Read more

Points to Remember: Photovoltaic effect Semiconductor materials p-n junction Electron-hole pair generation Current flow Efficiency limitations Introduction: A solar cell, also known as a photovoltaic (PV) cell, is a device that converts sunlight directly into electricity. This conversion is based on the photovoltaic effect, a phenomenon where light energy is absorbed by a material, causing … Read more

Points to Remember: RBSK’s comprehensive approach to child health. Focus on early identification and intervention. Multi-disciplinary approach involving various healthcare professionals. Community participation and awareness crucial for success. Challenges in implementation and achieving universal coverage. Introduction: The Rashtriya Bal Swasthya Karyakram (RBSK), or National Child Health Programme, is a flagship initiative of the Government of … Read more

Points to Remember: Definition of communicable diseases. Different types of immunity (innate, adaptive, passive, active). Mechanisms of each immunity type. Examples of communicable diseases and their impact. Introduction: Communicable diseases, also known as infectious diseases or transmissible diseases, are illnesses caused by pathogenic microorganisms, such as bacteria, viruses, parasites, or fungi. These diseases can spread … Read more