MPPSC MAINS 2020 Paper-III

Points to Remember: Profit and loss percentage calculation. Cost price calculation. Application of percentage formula. Introduction: This question involves a basic business mathematics problem concerning profit and loss percentage. Profit is the difference between the selling price and the cost price of a good, while loss is the difference when the cost price exceeds the … Read more

Points to Remember: The problem involves solving a system of equations based on a given ratio and total amount. Understanding ratios and their implications is crucial. Careful calculation and attention to detail are necessary to avoid errors. Introduction: This question is a mathematical word problem requiring the application of ratio and proportion principles to solve … Read more

Points to Remember: Definition of social media Key features of social media Importance of social media (positive and negative aspects) Examples of social media platforms and their impact Introduction: Social media refers to interactive computer-mediated technologies that facilitate the creation and sharing of information, ideas, career interests, and other forms of expression via virtual communities … Read more

Points to Remember: Definition and transmission of HIV/AIDS. Global impact and prevalence. Treatment and prevention strategies. Social and economic consequences. Ongoing challenges and future directions. Introduction: Acquired Immunodeficiency Syndrome (AIDS) is a life-threatening condition caused by the Human Immunodeficiency Virus (HIV). HIV attacks the body’s immune system, specifically the CD4 cells (T cells), which are … Read more

Points to Remember: Mitosis is a type of cell division resulting in two identical daughter cells. It involves four main stages: prophase, metaphase, anaphase, and telophase. Cytokinesis, the division of the cytoplasm, follows mitosis. Accurate chromosome segregation is crucial for maintaining genetic stability. Introduction: Mitosis is a fundamental process in all eukaryotic organisms, responsible for … Read more

Points to Remember: Vacuum tubes as primary components. Limited processing power and memory. Large size and high power consumption. Primarily used for scientific and military applications. Development of programming languages like assembly language. Introduction: The history of computing is marked by distinct generations, each characterized by a fundamental technological advancement. The first generation of computers … Read more

Points to Remember: Definition of nuclear fission. Explanation of the energy release mechanism in fission. Role of mass defect and Einstein’s mass-energy equivalence. Comparison with other energy sources. Introduction: Nuclear fission is a process where the nucleus of an atom splits into two or more smaller nuclei, releasing a tremendous amount of energy. This energy … Read more

Points to Remember: Hund’s Rule of Maximum Multiplicity Electron pairing in orbitals (p, d, f) Orbital filling order Electronic configuration Introduction: Hund’s rule of maximum multiplicity, a fundamental principle in atomic physics, governs the filling of electrons into orbitals within a subshell. It states that electrons will individually occupy each orbital within a subshell before … Read more

Points to Remember: Definition of ore Characteristics of ore Types of ore Economic importance of ore Environmental considerations related to ore extraction Introduction: An “ore” is a naturally occurring solid material from which a valuable mineral or minerals can be profitably extracted. It’s not simply the presence of a valuable mineral, but the concentration of … Read more

Points to Remember: Looming is a perceptual phenomenon. It’s influenced by atmospheric conditions. It affects distance perception. It can have safety implications. Introduction: Looming is a visual phenomenon where objects appear closer, larger, and faster-approaching than they actually are. This distortion of perceived distance and size is primarily caused by atmospheric conditions, particularly temperature inversions … Read more