MPPSC MAINS 2022 Paper-III

Points to Remember: Reaction time is the delay between a stimulus (seeing the ruler drop) and a response (catching it). Free fall implies constant acceleration due to gravity (approximately 9.8 m/s²). We’ll use kinematic equations to estimate the reaction time. Introduction: Reaction time is a crucial aspect of human physiology and plays a significant role … Read more

Points to Remember: Definition of Lewis acids and bases. Electron pair donation and acceptance. Structure and bonding of NH₃ and BF₃. Octet rule and its exceptions. Introduction: The classification of molecules as Lewis acids or bases hinges on their ability to donate or accept electron pairs. A Lewis acid is a species that accepts an … Read more

Points to Remember: Aquifer definition and types Aquifer characteristics (porosity, permeability) Aquifer recharge and discharge Importance of aquifers for water supply Threats to aquifer sustainability Introduction: An aquifer is an underground layer of rock or sediment that holds groundwater. It’s a crucial natural resource, providing a significant portion of the world’s freshwater supply for drinking, … Read more

Points to Remember: Igneous rock formation from magma/lava. Classification based on texture and composition. Examples of intrusive and extrusive igneous rocks. Importance of igneous rocks in geology and resource extraction. Introduction: Igneous rocks, derived from the Latin word “igneus” meaning “fire,” are one of the three main rock types (along with sedimentary and metamorphic rocks). … Read more

Points to Remember: The upper continental crust is the outermost layer of the Earth’s continental landmasses. Its composition is primarily felsic (rich in feldspar and silica). It’s heterogeneous, meaning its composition varies significantly across different locations. Understanding its composition is crucial for various geological and resource-related applications. Introduction: The Earth’s crust is the outermost solid … Read more

Points to Remember: Definition and types of e-waste. Sources of e-waste generation. Environmental and health impacts of e-waste. Management and recycling of e-waste. Global and national policies related to e-waste management. Introduction: E-waste, or electronic waste, refers to discarded electrical or electronic devices. This encompasses a vast range of items, from computers and smartphones to … Read more

Points to Remember: International treaty designed to phase out ozone-depleting substances (ODS). Significant success in protecting the ozone layer. Ongoing challenges related to ODS emissions and illegal trade. Importance of international cooperation for environmental protection. Introduction: The Montreal Protocol on Substances that Deplete the Ozone Layer is a landmark multilateral environmental agreement, finalized in 1987. … Read more

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Points to Remember: Definition and formation of hot springs. Types of hot springs. Geographic distribution and geological significance. Uses and benefits of hot springs. Environmental concerns and sustainability. Introduction: A hot spring is a natural spring that emits water heated geothermally. This means the water has been heated by the Earth’s internal heat. The temperature … Read more

Points to Remember: Definition and characteristics of conventional energy sources. Examples of conventional energy sources. Advantages and disadvantages of conventional energy sources. Environmental impact of conventional energy sources. The future of conventional energy sources. Introduction: Conventional energy sources, also known as traditional energy sources, refer to those energy sources that have been used for a … Read more