Q1. What are rational numbers?
A. Numbers that can be written in the form p/q where q is not zero.
Q2. What is a natural number?
A. Counting numbers starting from 1.
Q3. What is an integer?
A. Whole numbers including positive, negative numbers and zero.
Q4. What is a square number?
A. A number obtained by multiplying a number by itself.
Q5. What is a cube number?
A. A number obtained by multiplying a number three times.
Q6. What is algebra?
A. A branch of mathematics using letters and symbols to represent numbers.
Q7. What is a variable?
A. A symbol used to represent an unknown value.
Q8. What is an equation?
A. A mathematical statement showing equality between two expressions.
Q9. What is a linear equation?
A. An equation in which the highest power of the variable is one.
Q10. What is factorisation?
A. Writing a number or expression as a product of factors.
Q11. What is percentage?
A. A number expressed as a fraction of 100.
Q12. Where are percentages used in daily life?
A. In exams, discounts, profit and loss, and banking.
Q13. What is ratio?
A. A comparison of two quantities of the same kind.
Q14. What is direct proportion?
A. When two quantities increase or decrease together.
Q15. What is inverse proportion?
A. When one quantity increases and the other decreases.
Q16. What is geometry?
A. The branch of mathematics dealing with shapes and figures.
Q17. What is a polygon?
A. A closed figure formed by straight line segments.
Q18. What is a quadrilateral?
A. A polygon with four sides.
Q19. What is area?
A. The region covered by a plane figure.
Q20. Why is mathematics important?
A. It helps develop logical thinking and problem-solving skills.
Q1. What is science?
A. Science is the study of nature and how things work.
Q2. Why do we study science?
A. To understand natural phenomena and improve daily life.
Q3. What is a living organism?
A. An organism that grows, reproduces, and performs life processes.
Q4. What is a cell?
A. The basic structural and functional unit of life.
Q5. Who discovered the cell?
A. Robert Hooke discovered the cell.
Q6. What is tissue?
A. A group of similar cells performing a specific function.
Q7. What is photosynthesis?
A. The process by which green plants make food using sunlight.
Q8. Why is photosynthesis important?
A. It provides food and oxygen for living beings.
Q9. What is respiration?
A. The process of releasing energy from food.
Q10. What is combustion?
A. A chemical process in which a substance reacts with oxygen to produce heat and light.
Q11. What is force?
A. A push or pull that can change the shape or motion of an object.
Q12. What are types of forces?
A. Contact forces and non-contact forces.
Q13. What is friction?
A. A force that opposes motion between two surfaces in contact.
Q14. Why is friction useful?
A. It helps us walk, write, and hold objects.
Q15. What is sound?
A. Sound is a form of energy produced by vibrating objects.
Q16. What is pollution?
A. The contamination of air, water, or land by harmful substances.
Q17. What are renewable resources?
A. Resources that can be replenished naturally.
Q18. What are non-renewable resources?
A. Resources that cannot be easily replaced once used.
Q19. What is conservation?
A. Protection and wise use of natural resources.
Q20. Why should we protect the environment?
A. To maintain ecological balance and ensure a safe future.
Q1. What is a computer?
A. A computer is an electronic device that processes data into information.
Q2. What is data?
A. Raw facts and figures that are processed by a computer.
Q3. What is information?
A. Processed data that is meaningful and useful.
Q4. What are the main parts of a computer system?
A. Hardware, software, and users.
Q5. What is hardware?
A. The physical components of a computer that can be seen and touched.
Q6. What is software?
A. A set of instructions that tells the computer what to do.
Q7. What is an operating system?
A. System software that controls and manages computer operations.
Q8. Examples of operating systems?
A. Windows, Linux, macOS, Android.
Q9. What is CPU?
A. Central Processing Unit, the brain of the computer.
Q10. What is memory?
A. A place where data and instructions are stored.
Q11. What is RAM?
A. Temporary memory used while the computer is working.
Q12. What is ROM?
A. Permanent memory that stores important instructions.
Q13. What is secondary storage?
A. Devices used to store data permanently.
Q14. Examples of secondary storage?
A. Hard disk, pen drive, CD, DVD.
Q15. What is a network?
A. A group of connected computers that share resources.
Q16. What is the internet?
A. A worldwide network connecting millions of computers.
Q17. What is email?
A. A method of sending electronic messages through the internet.
Q18. What is cyber safety?
A. Safe and responsible use of the internet and digital devices.
Q19. What is a computer virus?
A. A harmful program that can damage computer data.
Q20. Why is antivirus software important?
A. It protects the computer from viruses and malware.