MPPSC MAINS 2023 Paper-III

Points to Remember: OMR stands for Optical Mark Recognition. It’s a technology used for automated grading of tests and surveys. Efficiency and accuracy are key advantages. Limitations include cost and potential for errors. Introduction: Optical Mark Recognition (OMR) is a technology that uses a machine to read marks made on paper documents, such as answer … Read more

Points to Remember: The cell theory is a fundamental principle in biology. Multiple scientists contributed to its development. The theory has evolved over time. Introduction: The cell theory is a cornerstone of modern biology, stating that all living organisms are composed of cells, that cells are the basic unit of structure and function in living … Read more

Points to Remember: Viruses are acellular infectious agents. They require a host cell to replicate. The two main components are genetic material and a protein coat. Introduction: Viruses are microscopic infectious agents that are not considered living organisms in the traditional sense because they lack the cellular machinery necessary for independent replication. Instead, they are … Read more

Points to Remember: Plasmolysis is a cellular process. It involves changes in cell turgor pressure. It’s related to osmosis and water potential. It has implications for plant physiology and survival. Introduction: Plasmolysis is a phenomenon observed in plant cells and some other organisms when they lose water through osmosis. Osmosis is the movement of water … Read more

Points to Remember: Brønsted-Lowry acid-base theory defines an acid as a proton (H⁺) donor and a base as a proton acceptor. The conjugate acid of a base is formed by adding a proton (H⁺) to the base. Introduction: The Brønsted-Lowry theory provides a comprehensive framework for understanding acid-base reactions. A Brønsted-Lowry base accepts Join Our … Read more

Points to Remember: Modern periodic law is based on atomic number. Elements are arranged in increasing order of atomic number. Elements with similar properties are placed in the same group or column. The periodic table reflects the electronic configuration of elements. Introduction: The modern periodic law, a cornerstone of chemistry, states that the properties of … Read more

Points to Remember: Human hearing range Variation in hearing range with age Factors affecting hearing range Introduction: The human ear’s ability to perceive sound is limited to a specific range of frequencies, known as the audible frequency range. This range is typically defined as the frequencies at which a healthy young adult can hear sounds … Read more

Points to Remember: Total Internal Reflection (TIR) Refractive Index Optical Fiber Structure (Core and Cladding) Applications of Optical Fibers Introduction: Optical fibers are thin, flexible strands of highly pure glass or plastic that transmit light signals over long distances with minimal loss. This technology revolutionized communication and various other fields. The fundamental phenomenon enabling this … Read more

Points to Remember: The question asks for the name of a specific series of spectral lines. The answer requires factual knowledge of atomic physics and spectroscopy. Introduction: Atomic hydrogen, the simplest atom Subscribe on YouTube with one proton and one electron, emits light when its electron transitions between different energy levels. These transitions result in … Read more

Points to Remember: Mass is the amount of matter in an object. Weight is the force of gravity on an object. Mass is constant, while weight varies depending on gravity. The units of mass are kilograms (kg), and the units of weight are Newtons (N). Introduction: The terms “mass” and “weight” are often used interchangeably … Read more