Q1. What is a quadratic equation?
A. An equation of the form ax² + bx + c = 0 where a ≠ 0.
Q2. What is the standard form of a quadratic equation?
A. ax² + bx + c = 0.
Q3. What is the discriminant?
A. The value b² − 4ac used to determine the nature of roots.
Q4. What are real roots?
A. Roots that have real number values.
Q5. When does a quadratic equation have equal roots?
A. When the discriminant is zero.
Q6. What is arithmetic progression (AP)?
A. A sequence where the difference between consecutive terms is constant.
Q7. What is the common difference?
A. The constant difference between two consecutive terms of an AP.
Q8. What is the nth term of an AP?
A. aₙ = a + (n − 1)d.
Q9. What is the sum of first n terms of an AP?
A. Sₙ = n/2 [2a + (n − 1)d].
Q10. What is coordinate geometry?
A. Study of geometry using coordinates.
Q11. What is distance formula?
A. √[(x₂ − x₁)² + (y₂ − y₁)²].
Q12. What is midpoint formula?
A. ((x₁ + x₂)/2 , (y₁ + y₂)/2).
Q13. What is trigonometry?
A. Study of relationships between angles and sides of a triangle.
Q14. What are trigonometric ratios?
A. sin, cos, tan, cosec, sec, cot.
Q15. Value of sin 30°?
A. 1/2.
Q16. Value of cos 60°?
A. 1/2.
Q17. Value of tan 45°?
A. 1.
Q18. What is a circle?
A. A set of points equidistant from a fixed center.
Q19. What is tangent to a circle?
A. A line that touches the circle at exactly one point.
Q20. How many tangents can be drawn from a point outside a circle?
A. Two.
Q21. What is a triangle?
A. A polygon with three sides.
Q22. What are similar triangles?
A. Triangles having same shape but different size.
Q23. What is Pythagoras theorem?
A. Square of hypotenuse equals sum of squares of other two sides.
Q24. What is surface area?
A. Total area of all faces of a solid.
Q25. What is volume?
A. The space occupied by a solid.
Q26. What is a sphere?
A. A perfectly round 3D object.
Q27. Formula of volume of sphere?
A. (4/3)πr³.
Q28. What is statistics?
A. Collection and analysis of numerical data.
Q29. What is mean?
A. Average of observations.
Q30. What is probability?
A. Measure of likelihood of an event.
Q31. Range of probability?
A. Between 0 and 1.
Q1. What is a quadratic equation?
A. A quadratic equation is an equation of the form ax² + bx + c = 0 where a ≠ 0.
Q2. What is the formula to find the roots of a quadratic equation?
A. x = (-b ± √(b² - 4ac)) / 2a
Q3. What is probability?
A. Probability is the measure of the chance of an event occurring.
Q1. What is Newton's Second Law?
A. Force equals mass multiplied by acceleration (F = ma).
Q2. What is work in physics?
A. Work is done when a force moves an object over a distance.
Q3. What is power?
A. Power is the rate of doing work.
Q1. What is a chemical bond?
A. A chemical bond is the force that holds atoms together in a molecule.
Q2. What is the periodic table?
A. It is a table that arranges elements based on their atomic number and properties.
Q3. What is an acid?
A. An acid is a substance that releases hydrogen ions (H+) in solution.
Q1. What is DNA?
A. DNA is the molecule that carries genetic information in living organisms.
Q2. What is respiration?
A. Respiration is the process by which cells release energy from food.
Q3. What is the nervous system?
A. It is the system that controls and coordinates body activities.
Q1. What is a tense?
A. Tense shows the time of an action or event.
Q2. What is a passive voice?
A. In passive voice, the subject receives the action.
Q3. What is an essay?
A. An essay is a short piece of writing on a particular topic.
Q1. What is globalization?
A. Globalization is the increasing connection and interaction between countries.
Q2. What is renewable energy?
A. Renewable energy comes from natural sources that do not run out.
Q3. What is urbanization?
A. Urbanization is the growth of cities due to population movement.
Q1. What was World War II?
A. A global war fought from 1939 to 1945 involving major world powers.
Q2. What is the Cold War?
A. A period of political tension between the USA and the Soviet Union.
Q3. What is the European Union?
A. The European Union is a group of European countries that cooperate economically and politically.
Q1. What is a programming language?
A. A programming language is used to write instructions for a computer.
Q2. What is an algorithm?
A. An algorithm is a step-by-step procedure to solve a problem.
Q3. What is the Internet?
A. The Internet is a global network that connects computers worldwide.
Q1. What is science?
A. Science is the systematic study of nature and natural phenomena.
Q2. What is matter?
A. Anything that has mass and occupies space.
Q3. What are the states of matter?
A. Solid, liquid, and gas.
Q4. What is a chemical reaction?
A. A process in which substances change to form new substances.
Q5. What is a chemical equation?
A. A symbolic representation of a chemical reaction.
Q6. What is oxidation?
A. Loss of electrons or gain of oxygen.
Q7. What is reduction?
A. Gain of electrons or loss of oxygen.
Q8. What is corrosion?
A. Slow destruction of metals due to chemical reactions.
Q9. Example of corrosion?
A. Rusting of iron.
Q10. What is acid?
A. A substance that produces hydrogen ions in solution.
Q11. What is base?
A. A substance that produces hydroxide ions in solution.
Q12. What is pH scale?
A. A scale to measure acidity or basicity of a solution.
Q13. What is salt?
A. A compound formed by neutralization of acid and base.
Q14. What is metal?
A. An element that is hard, shiny, and a good conductor.
Q15. What is non-metal?
A. An element that lacks metallic properties.
Q16. What is alloy?
A. A mixture of two or more metals or metal and non-metal.
Q17. Example of alloy?
A. Brass, steel.
Q18. What is carbon?
A. A non-metal essential for life.
Q19. What are hydrocarbons?
A. Compounds made of carbon and hydrogen.
Q20. What is ethanol?
A. An alcohol used as fuel and solvent.
Q21. What is life process?
A. Processes necessary to maintain life.
Q22. What is nutrition?
A. Process of obtaining food for energy and growth.
Q23. What is respiration?
A. Process of releasing energy from food.
Q24. What is aerobic respiration?
A. Respiration in presence of oxygen.
Q25. What is anaerobic respiration?
A. Respiration in absence of oxygen.
Q26. What is transportation in plants?
A. Movement of water and food in plants.
Q27. What is excretion?
A. Removal of waste products from the body.
Q28. What is control and coordination?
A. System that regulates body activities.
Q29. What is hormone?
A. Chemical messengers secreted by glands.
Q30. What is nervous system?
A. System that controls and coordinates body functions.
Q31. What is reproduction?
A. Process of producing new individuals.
Q32. What is asexual reproduction?
A. Reproduction involving a single parent.
Q33. What is sexual reproduction?
A. Reproduction involving two parents.
Q34. What is heredity?
A. Transmission of traits from parents to offspring.
Q35. What is gene?
A. Unit of heredity.
Q36. What is evolution?
A. Gradual change in organisms over generations.
Q37. What is environment?
A. Surroundings in which organisms live.
Q38. What is ecosystem?
A. Interaction between living and non-living components.
Q39. What is food chain?
A. Sequence of energy transfer through organisms.
Q40. What is biodiversity?
A. Variety of living organisms.
Q41. What is renewable resource?
A. Resources that can be replenished naturally.
Q42. What is non-renewable resource?
A. Resources that cannot be replenished easily.
Q43. What is conservation?
A. Protection and careful use of resources.
Q44. What is electricity?
A. Flow of electric charge.
Q45. What is electric circuit?
A. A closed path for electric current.
Q1. What is a cell?
A. A cell is the basic structural and functional unit of life.
Q2. Who discovered cells?
A. Robert Hooke discovered cells.
Q3. What is the cell membrane?
A. It controls the movement of substances in and out of the cell.
Q4. What is the nucleus?
A. The nucleus controls cell activities and contains DNA.
Q5. What is cytoplasm?
A. Cytoplasm is the jelly-like substance where cell activities occur.
Q6. What is DNA?
A. DNA carries genetic information.
Q7. What is a tissue?
A. A group of similar cells performing the same function.
Q8. What is an organ?
A. A structure made of different tissues working together.
Q9. What is photosynthesis?
A. The process by which plants make food using sunlight.
Q10. Where does photosynthesis occur?
A. In chloroplasts.
Q11. What is chlorophyll?
A. The green pigment that absorbs sunlight.
Q12. What is respiration?
A. The process of releasing energy from food.
Q13. What is aerobic respiration?
A. Respiration using oxygen.
Q14. What is anaerobic respiration?
A. Respiration without oxygen.
Q15. What is the digestive system?
A. It breaks down food into nutrients.
Q16. What is the circulatory system?
A. It transports blood throughout the body.
Q17. What is the heart?
A. A muscular organ that pumps blood.
Q18. What is blood?
A. A fluid that carries oxygen and nutrients.
Q19. What are red blood cells?
A. Cells that carry oxygen.
Q20. What are white blood cells?
A. Cells that fight infection.
Q21. What is the nervous system?
A. It controls and coordinates body activities.
Q22. What is the brain?
A. The control center of the body.
Q23. What is a neuron?
A. A nerve cell that transmits signals.
Q24. What is the endocrine system?
A. A system that controls hormones.
Q25. What is a hormone?
A. A chemical messenger in the body.
Q26. What is reproduction?
A. The process of producing new organisms.
Q27. What is sexual reproduction?
A. Reproduction involving two parents.
Q28. What is asexual reproduction?
A. Reproduction involving one parent.
Q29. What is inheritance?
A. Passing traits from parents to offspring.
Q30. What is a gene?
A. A unit of heredity.
Q31. What is evolution?
A. The gradual change in organisms over time.
Q32. What is natural selection?
A. Survival of the fittest organisms.
Q33. What is an ecosystem?
A. A community of living and non-living things.
Q34. What is a food chain?
A. The flow of energy from one organism to another.
Q35. What is a food web?
A. A network of interconnected food chains.
Q36. What is a producer?
A. An organism that makes its own food.
Q37. What is a consumer?
A. An organism that eats other organisms.
Q38. What is a decomposer?
A. An organism that breaks down dead matter.
Q39. What is biodiversity?
A. The variety of living organisms.
Q40. What is conservation?
A. Protection of natural resources.
Q41. What is pollution?
A. Contamination of the environment.
Q42. What is vaccination?
A. Protection against diseases using vaccines.
Q43. What is immunity?
A. The body’s ability to fight disease.
Q44. What is homeostasis?
A. Maintaining stable internal conditions.
Q45. What is metabolism?
A. All chemical reactions in the body.
Q46. What is an enzyme?
A. A protein that speeds up reactions.
Q47. What is transpiration?
A. Loss of water from plant leaves.
Q48. What is germination?
A. The growth of a seed into a plant.
Q49. What is adaptation?
A. A feature that helps survival.
Q50. What is extinction?
A. The disappearance of a species.
Q1. What is chemistry?
A. The study of matter and its changes.
Q2. What is matter?
A. Anything that has mass and occupies space.
Q3. What are the states of matter?
A. Solid, liquid, and gas.
Q4. What is an atom?
A. The smallest unit of an element.
Q5. What are subatomic particles?
A. Protons, neutrons, and electrons.
Q6. What is atomic number?
A. The number of protons in an atom.
Q7. What is mass number?
A. Protons plus neutrons.
Q8. What is an element?
A. A pure substance made of one type of atom.
Q9. What is a compound?
A. Two or more elements chemically combined.
Q10. What is a mixture?
A. A physical combination of substances.
Q11. What is the periodic table?
A. A chart of elements arranged by atomic number.
Q12. What are metals?
A. Elements that conduct heat and electricity.
Q13. What are non-metals?
A. Elements that do not conduct well.
Q14. What are metalloids?
A. Elements with properties of metals and non-metals.
Q15. What is a chemical bond?
A. Force holding atoms together.
Q16. What is an ionic bond?
A. Bond formed by transfer of electrons.
Q17. What is a covalent bond?
A. Bond formed by sharing electrons.
Q18. What is a chemical reaction?
A. A process where substances change.
Q19. What is a reactant?
A. Substances that take part in a reaction.
Q20. What is a product?
A. Substances formed after reaction.
Q21. What is a balanced equation?
A. Equal atoms on both sides.
Q22. What is oxidation?
A. Loss of electrons.
Q23. What is reduction?
A. Gain of electrons.
Q24. What is an acid?
A. A substance that releases H+ ions.
Q25. What is a base?
A. A substance that releases OH- ions.
Q26. What is a pH scale?
A. A scale to measure acidity or alkalinity.
Q27. What is neutralization?
A. Reaction between acid and base.
Q28. What is a salt?
A. Product of acid-base reaction.
Q29. What is a catalyst?
A. A substance that speeds up a reaction.
Q30. What is energy change in reactions?
A. Energy absorbed or released.
Q31. What is an exothermic reaction?
A. Releases heat.
Q32. What is an endothermic reaction?
A. Absorbs heat.
Q33. What is concentration?
A. Amount of solute in solution.
Q34. What is a solution?
A. A homogeneous mixture.
Q35. What is solute?
A. Substance dissolved.
Q36. What is solvent?
A. Substance that dissolves solute.
Q37. What is electrolysis?
A. Using electricity to break compounds.
Q38. What is corrosion?
A. Slow destruction of metals.
Q39. What is rusting?
A. Corrosion of iron.
Q40. What is polymer?
A. A large molecule made of repeating units.
Q41. What is plastic?
A. A synthetic polymer material.
Q42. What is fuel?
A. A substance that produces energy when burned.
Q43. What is fossil fuel?
A. Fuel formed from ancient organisms.
Q44. What is greenhouse gas?
A. Gas that traps heat in atmosphere.
Q45. What is air pollution?
A. Harmful substances in air.
Q46. What is water treatment?
A. Process of making water safe.
Q47. What is recycling?
A. Reusing waste materials.
Q48. What is laboratory safety?
A. Rules to prevent accidents.
Q49. What is chemical hazard?
A. A substance that can cause harm.
Q1. What is a computer?
A. A computer is an electronic device that processes data into useful information.
Q2. What are the main components of a computer system?
A. Input devices, CPU, memory, storage, and output devices.
Q3. What is hardware?
A. The physical parts of a computer that can be touched.
Q4. What is software?
A. A set of programs that tell the computer what to do.
Q5. What is an operating system?
A. Software that manages computer hardware and software resources.
Q6. Examples of operating systems?
A. Windows, Linux, macOS, Android.
Q7. What is CPU?
A. Central Processing Unit, the brain of the computer.
Q8. What are input devices?
A. Devices used to enter data into the computer.
Q9. Examples of input devices?
A. Keyboard, mouse, scanner, microphone.
Q10. What are output devices?
A. Devices that show the result of processing.
Q11. Examples of output devices?
A. Monitor, printer, speaker, projector.
Q12. What is memory?
A. Storage area used to store data and instructions.
Q13. What is RAM?
A. Random Access Memory used for temporary data storage.
Q14. What is ROM?
A. Read Only Memory used to store permanent instructions.
Q15. Difference between RAM and ROM?
A. RAM is temporary and volatile, ROM is permanent and non-volatile.
Q16. What is secondary storage?
A. Storage used to store data permanently.
Q17. Examples of secondary storage?
A. Hard disk, pen drive, SSD, CD/DVD.
Q18. What is a file?
A. A collection of related data stored with a name.
Q19. What is a folder?
A. A container used to organize files.
Q20. What is data?
A. Raw facts and figures.
Q21. What is information?
A. Processed data that is meaningful.
Q22. What is a computer network?
A. A group of interconnected computers.
Q23. What is the Internet?
A. A global network connecting millions of computers.
Q24. What is a browser?
A. Software used to access websites.
Q25. Examples of browsers?
A. Chrome, Firefox, Edge, Safari.
Q26. What is a website?
A. A collection of related web pages.
Q27. What is a web page?
A. A single document on the Internet.
Q28. What is a URL?
A. Uniform Resource Locator, address of a webpage.
Q29. What is HTML?
A. HyperText Markup Language used to create web pages.
Q30. What is programming?
A. Writing instructions for a computer to perform tasks.
Q31. What is a programming language?
A. A language used to write computer programs.
Q32. Examples of programming languages?
A. Python, C, C++, Java.
Q33. What is an algorithm?
A. A step-by-step solution to a problem.
Q34. What is a flowchart?
A. A diagrammatic representation of an algorithm.
Q35. What is debugging?
A. Finding and fixing errors in a program.
Q36. What is cybersecurity?
A. Protection of computer systems and data.
Q37. What is a computer virus?
A. A malicious program that harms computer systems.
Q38. What is antivirus software?
A. Software that detects and removes viruses.
Q39. What is cybercrime?
A. Criminal activities done using computers and internet.
Q40. What is online safety?
A. Practices to stay safe while using the internet.