MPPSC MAINS 2018 Paper-III

Points to Remember: Definition and principles of remote sensing. Types of remote sensing (aerial and satellite). Data acquisition and processing techniques. Applications across various fields. Advantages and limitations. Future trends and challenges. Introduction: Remote sensing is the science and art of obtaining information about an object, area, or phenomenon without making physical contact with it. … Read more

Points to Remember: This is a mathematical word problem requiring calculation. Keywords: pass marks, obtained marks, failed by, maximum marks. The approach is purely factual and mathematical. Introduction: This question tests the ability to solve a simple mathematical word problem involving percentages. The problem presents a scenario where a student’s performance is evaluated against a … Read more

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Points to Remember: Definition and types of haemophilia Causes and inheritance patterns Symptoms and diagnosis Treatment and management Complications and long-term effects Prevention and future research Introduction: Haemophilia is a group of inherited genetic disorders that impair the body’s ability to control blood clotting or coagulation. This leads to prolonged bleeding, even from minor injuries. … Read more

Points to Remember: Polar satellites orbit the Earth from pole to pole. They provide global coverage. They are crucial for weather forecasting, Earth observation, and communication. Different types of polar satellites exist, each with specific functionalities. Introduction: Polar satellites are a type of Earth-observing satellite that follows a near-polar orbit, passing over the Earth’s poles … Read more

Points to Remember: Trophic levels represent the feeding relationships within an ecosystem. Energy flows from one trophic level to another, with energy loss at each step. A pond ecosystem includes producers, consumers (herbivores, carnivores, omnivores), and decomposers. Each level plays a crucial role in maintaining the balance of the ecosystem. Introduction: A pond ecosystem is … Read more

Points to Remember: Corrosion is a natural process. Many methods exist to prevent or mitigate corrosion. Prevention is often more cost-effective than repair. Material selection is crucial in corrosion prevention. Introduction: Corrosion is the deterioration of a material, usually a metal, due to a chemical or electrochemical reaction with its environment. It’s a naturally occurring … Read more

Points to Remember: Definition and sources of nuclear fallout. Immediate and long-term health effects. Environmental impact. Mitigation and preparedness strategies. Introduction: Nuclear fallout refers to the radioactive dust and debris that are propelled into the atmosphere following a nuclear explosion. This radioactive material, consisting of fission products and activated neutrons, settles back to earth over … Read more

Points to Remember: Chemical composition of bleaching powder. Manufacturing process (brief overview). Two primary uses with explanations. Safety precautions (brief mention). Introduction: Bleaching powder, chemically known as calcium hypochlorite (Ca(ClO)₂), is a pale yellowish powder with a strong smell of chlorine. It’s a widely used chemical compound primarily employed as a bleaching agent and disinfectant. … Read more

Points to Remember: Greenhouse gases trap heat in the Earth’s atmosphere. Different greenhouse gases have varying global warming potentials. Reducing greenhouse gas emissions is crucial to mitigating climate change. Introduction: Greenhouse gases (GHGs) are gases in the Earth’s atmosphere that trap heat and contribute to the greenhouse effect. This effect is essential for life on … Read more