MPPSC MAINS 2022 Paper-III

Points to Remember: Definition and nature of energy. Different forms of energy (kinetic, potential, etc.). Detailed explanation of renewable energy sources (solar, wind, hydro, geothermal, biomass). Advantages and disadvantages of each renewable energy source. Policy recommendations for promoting renewable energy. Introduction: Energy is the capacity to do work. It exists in various forms and is … Read more

Points to Remember: Quantized energy levels Stationary orbits Electron transitions and photon emission/absorption Limitations of the model Introduction: Niels Bohr’s model of the hydrogen atom, proposed in 1913, revolutionized our understanding of atomic structure. Before Bohr, the prevailing classical physics couldn’t explain the stability of atoms or the discrete nature of atomic spectra. Bohr’s model, … Read more

Points to Remember: Global distribution of iron ore is uneven. Major deposits are concentrated in specific regions. Production and consumption patterns are linked to geological factors and industrial development. Sustainability concerns are increasingly important in iron ore mining. Introduction: Iron ore, the primary raw material for iron and steel production, is not uniformly distributed across … Read more

Points to Remember: Composition: Primarily composed of angular quartz grains. Cementation: Held together by a variety of cements. Formation: Formed from the rapid deposition of sediments. Texture: Typically has a gritty texture. Color: Varies widely, but often dark gray or greenish. Introduction: Greywacke sandstone is a type of sedimentary rock classified as a greywacke, a … Read more

Points to Remember: UN-Energy’s mandate and goals. Key initiatives and strategies within the Plan of Action. Focus areas: access to modern energy, energy efficiency, renewable energy. Challenges and opportunities in implementation. Potential impact on sustainable development goals. Introduction: The UN-Energy Plan of Action for 2025 is a collaborative effort by various UN agencies, governments, and … Read more

Points to Remember: Environmental ethics is a branch of applied ethics. It concerns human beings’ moral obligations to the environment. Key concepts include intrinsic value, anthropocentrism, biocentrism, ecocentrism, and sustainability. It influences environmental policy and individual actions. Introduction: Environmental ethics is a rapidly growing field that explores the moral relationship between humans and the natural … Read more

Points to Remember: Definition and characteristics of sacred groves. Ecological significance of sacred groves. Socio-cultural importance of sacred groves. Threats to sacred groves and conservation strategies. Introduction: Sacred groves, also known as sacred forests or holy forests, are patches of forest that are traditionally protected by local communities due to their religious or cultural significance. … Read more

Points to Remember: TIFR’s history and founding principles. TIFR’s core research areas. TIFR’s impact on Indian science and technology. TIFR’s educational programs and outreach initiatives. Introduction: The Tata Institute of Fundamental Research (TIFR) is a premier national institute for advanced research in fundamental sciences located in Mumbai, India. Established in 1945 by Dr. Homi J. … Read more

Points to Remember: The Rashtriya Vigyan Puraskar is an award given by the Government of India. The award recognizes significant contributions to science and technology. The specific names of recipients vary year to year. A comprehensive list requires accessing official government records. Introduction: The Rashtriya Vigyan Puraskar (National Science Award) is a prestigious award conferred … Read more

Points to Remember: Municipal Solid Waste (MSW) composition and its energy potential. Waste-to-energy (WtE) technologies and their efficiency. Environmental impacts of WtE and its alternatives. Economic viability and policy considerations. Introduction: Municipal solid waste (MSW), encompassing household, commercial, and institutional refuse, poses a significant environmental challenge globally. Landfilling, the traditional disposal method, contributes to greenhouse … Read more