General Knowledge

MPSC Previous Year Questions (PYQ)Diseases & Health — Check out hereTechnology — Check out hereEcology & Ecosystems — Check out hereInstruments & Measurement Devices — Check out hereBiology — Check out hereChemistry — Check out herePhysics — Check out here 1. Which gas is a major contributor to global warming? (A) Oxygen(B) Carbon dioxide(C) Nitrogen(D) … Read more

1. Which of the following metals is the most reactive? (A) Copper(B) Silver(C) Potassium(D) GoldAnswer: (C) PotassiumExplanation: Potassium is near the top of the reactivity series and reacts very vigorously. 2. Which of the following metals is the least reactive? (A) Sodium(B) Zinc(C) Gold(D) MagnesiumAnswer: (C) GoldExplanation: Gold is a very unreactive metal and is … Read more

1. Which state of matter has a definite shape and definite volume? (A) Solid(B) Liquid(C) Gas(D) PlasmaAnswer: (A) SolidExplanation: Solids have closely packed particles and therefore retain both their shape and volume. 2. Which state of matter has a definite volume but no definite shape? (A) Solid(B) Liquid(C) Gas(D) PlasmaAnswer: (B) LiquidExplanation: A liquid takes … Read more

Soap & Detergents 1. Soap cleans oily dirt mainly because soap molecules: (A) Dissolve oil completely in water(B) Form micelles around grease particles(C) Convert oil into acid(D) Increase the temperature of waterAnswer: (B) Form micelles around grease particles 2. The structure formed by soap molecules around grease in water is called: (A) Polymer(B) Micelle(C) Crystal(D) … Read more

1. Force, Motion & Mechanics Application Principle Washing machine Centrifugal effect Cream separator Centrifugal effect Banking of roads Centripetal force Seat belt Inertia Rocket Conservation of momentum / Newton’s third law Gun recoil Conservation of momentum Walking Newton’s third law Swimming Newton’s third law Rowing a boat Newton’s third law Jumping from a boat Conservation … Read more

Force & Newton’s Laws 1. A passenger in a moving bus tends to fall forward when the driver suddenly applies the brakes. This is due to: (A) Friction(B) Inertia of motion(C) Centripetal force(D) Gravitational force Answer: (B) Inertia of motionExplanation: The passenger’s body tends to continue moving forward due to inertia when the bus suddenly … Read more

Newton’s First Law — Inertia 1. A passenger in a moving bus falls forward when the bus suddenly stops. This is due to: (A) Inertia of rest(B) Inertia of motion(C) Centripetal force(D) Gravitational force Answer: (B) Inertia of motionExplanation: The passenger’s body tends to continue moving forward even after the bus stops. 2. When a … Read more

1. In a hydroelectric power plant, the energy of stored water is first converted mainly into: (A) Nuclear energy(B) Kinetic energy(C) Chemical energy(D) Sound energyAnswer: (B) Kinetic energyExplanation: Water stored at a height has gravitational potential energy. As it falls, this is converted into kinetic energy, which ultimately helps generate electrical energy. 2. The ultimate … Read more

Below is a competitive-exam focused MCQ set based directly on the applications you listed, with emphasis on the type of “device/phenomenon → principle” questions commonly asked in General Science. 1. Sea breeze generally occurs during the day because: (A) Sea heats faster than land(B) Land heats faster than sea(C) Both land and sea heat equally(D) … Read more

1. A sharp knife cuts vegetables more easily than a blunt knife because a sharp knife: (A) Applies less force(B) Has a smaller contact area and produces greater pressure(C) Has greater mass(D) Produces less pressure Answer: (B) Has a smaller contact area and produces greater pressureExplanation: Pressure is force per unit area. For the same … Read more