CGPSC MAINS 2022 Paper-4

Points to Remember: Tidal energy is a renewable energy source. It harnesses the power of the tides. Different technologies exist for tidal energy generation. Environmental impacts need consideration. Introduction: Tidal energy, a form of hydropower, harnesses the predictable rise and fall of ocean tides to generate electricity. Unlike solar and wind power, which are intermittent, … Read more

Points to Remember: Bacterial diseases are caused by bacteria. Protozoan diseases are caused by protozoa (single-celled eukaryotic organisms). Causal organisms are the specific bacteria or protozoa responsible for the disease. Introduction: Infectious diseases, caused by pathogenic microorganisms, pose significant threats to global health. Bacteria and protozoa are two major groups of microorganisms responsible for a … Read more

Points to Remember: This question requires a factual response, focusing on providing a list of endangered species. The answer will categorize species for clarity. Introduction: The International Union for Conservation of Nature (IUCN) Red List is the world’s most comprehensive inventory of the global conservation status of plant and animal species. Species are categorized based … Read more

Points to Remember: Primary memory is volatile and directly accessible by the CPU. Secondary memory is non-volatile and requires an intermediary step for CPU access. Different types of memory exist within each category, each with its own speed and capacity trade-offs. Introduction: Computer memory is a crucial component enabling the execution of programs and storage … Read more

Points to Remember: The human brain is a complex organ with distinct regions responsible for specific functions. Understanding these regions helps us comprehend behavior, cognition, and neurological disorders. Interconnectivity between brain regions is crucial for integrated functioning. Introduction: The human brain, weighing approximately 3 pounds, is the command center of the body, responsible for everything … Read more

Points to Remember: Probability is the likelihood of an event occurring. A standard deck of cards has 52 cards. Face cards are Jacks, Queens, and Kings. Introduction: This question requires a factual and analytical approach to determine the probability of drawing a face card from a standard deck of 52 playing cards. Probability is a … Read more

Points to Remember: The problem involves a rectangle with a relationship between breadth and length. We need to find the length and breadth using the given perimeter. The area of a rectangle is calculated as length × breadth. Introduction: This question is a mathematical word problem requiring a factual and analytical approach. It tests our … Read more

Points to Remember: Simple interest calculation involves principal, rate, and time. The formula for simple interest is: Simple Interest (SI) = (P × R × T) / 100, where P = Principal (loan amount), R = Rate of interest, and T = Time in years. We need to rearrange the formula to find the principal … Read more

Points to Remember: Definition of eutrophication Causes of eutrophication One significant harm of eutrophication Potential solutions or mitigation strategies Introduction: Eutrophication is the excessive enrichment of a water body with nutrients, primarily nitrogen and phosphorus. This process, often accelerated by human activities, leads to a series of ecological imbalances and detrimental effects on aquatic life … Read more

Points to Remember: Definition and types of corrosion Mechanisms of corrosion Examples of corrosion in everyday life Methods of corrosion prevention Introduction: Corrosion is the deterioration of a material, usually a metal, due to a chemical reaction with its environment. It’s a natural process that causes significant economic losses globally, estimated to be in the … Read more