MPPSC MAINS 2021 Paper-III

Points to Remember: This is a word problem involving a simple algebraic equation. We need to translate the word problem into a mathematical equation. Solving the equation will give us Shyam’s age. Introduction: This question is a classic example of an age-related word problem commonly encountered in elementary algebra. These problems require careful reading and … Read more

Points to Remember: Probability of an event: The likelihood of an event occurring. Complementary events: Two events are complementary if one event occurs if and only if the other does not. The sum of probabilities of complementary events is always 1. Introduction: This question involves calculating the probability of a complementary event in a simple … Read more

Points to Remember: Join Our Telegram Channel Input devices feed data into a computer. Output devices display or present processed data from the computer. Examples should be provided for both input and output devices. Introduction: Subscribe on YouTube A computer system fundamentally relies on the interaction between its internal processing unit and external devices. This … Read more

Points to Remember: Increased accessibility of documents. Enhanced security and reduced risk of document loss or damage. Time and cost savings. Improved efficiency of government services. Contribution to a paperless and digital India. Introduction: Subscribe on YouTube DigiLocker is a flagship initiative of the Indian government’s Digital India program, aimed at providing citizens with a … Read more

Points to Remember: The Activity Series is a list of metals and nonmetals arranged in order of their reactivity. More reactive elements displace less reactive elements from their compounds. The series is crucial for predicting the outcome of single displacement reactions. The series is based on experimental observations and standard reduction potentials. Introduction: The Activity … Read more

Points to Remember: Respiration is a vital process for energy production. Different organisms have different respiratory organs adapted to their environment. Efficient respiration is crucial for survival and overall health. Introduction: Respiration is a fundamental biological process that involves the release of energy from organic molecules, primarily glucose, to fuel cellular activities. This energy is … Read more

Points to Remember: Location and function of the testes. Structure of the testes (seminiferous tubules, Leydig cells). Spermatogenesis and hormonal regulation. Descent of the testes and its importance. Common disorders affecting the testes. Introduction: The testes (plural of testis) are the male gonads, the primary reproductive organs in male mammals. Their primary function is the … Read more

Points to Remember: Kinetic energy is the energy of motion. Kinetic energy is calculated using the formula: KE = 1/2 * mv² (where m is mass and v is velocity). Units must be consistent (e.g., kilograms for mass, meters per second for velocity). Introduction: This question requires a factual and analytical approach to calculate the … Read more

Points to Remember: Conduction Convection Radiation Introduction: Heat transfer is the movement of thermal energy from a region of higher temperature to a region of lower temperature. This process is fundamental to many natural phenomena and engineering applications. Understanding the different modes of heat transfer is crucial in various fields, from designing efficient heating systems … Read more

Points to Remember: Mixtures and compounds are both combinations of substances. The key difference lies in how the constituent substances are combined. Differences exist in terms of composition, properties, and separation methods. Introduction: Chemistry fundamentally deals with matter and its transformations. Matter exists in various forms, including mixtures and compounds. Both are combinations of two … Read more