This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Science Chapter 11 Force And Pressure – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 11 Force And Pressure Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Earth complete its one revolution around sun in ..... A) 24 days. B) 365 days. C) 334 days. D) 27 days. Show Answer Correct Answer: B) 365 days. 2. A car moving at a speed of 72km/h slows down to a speed of 18km/h in 5 seconds. Calculate the force applied by the brakes to slow the car down if the mass of the car is 3000kg. A) On. B) -600N. C) -9000N. D) -3000N. Show Answer Correct Answer: C) -9000N. 3. When two forces act in opposite directions, then net force acting is the- A) Sum of two forces. B) Difference between the two forces. C) Both of these. D) None of these. Show Answer Correct Answer: B) Difference between the two forces. 4. Which of these are not contact forces A) Frictional Force. B) Muscular Force. C) Gravitational Force. D) Mechanical Force. Show Answer Correct Answer: C) Gravitational Force. 5. Force is a ..... quantity and is measured using a ..... A) Vector, Barometer. B) Vector, spring balance. C) Vector, Manometer. D) None of the above. Show Answer Correct Answer: B) Vector, spring balance. 6. The force exerted by a magnet on a piece of iron is also a contact force A) None of these. B) True. C) False. D) None of the above. Show Answer Correct Answer: C) False. 7. A device used to measure the pressure exerted by a liquid is A) Manometer. B) Barometer. C) Hydrometer. D) Lactometer. Show Answer Correct Answer: A) Manometer. 8. Example of Magnetic Material A) Cobalt. B) Steel. C) Nickel. D) All of The Above. Show Answer Correct Answer: D) All of The Above. 9. There is one force which is exerted by all matter on all other matter.which force is this A) Gravitational force. B) Magnetic force. C) Electrostatic force. D) Frictional force. Show Answer Correct Answer: A) Gravitational force. 10. Why to deep sea drivers wear special suites? A) To look attractive. B) To protect from large liquid pressure. C) To protect from low pressure in oceans. D) None of the above. Show Answer Correct Answer: B) To protect from large liquid pressure. 11. How can we increase the gas pressure inside a sealed container? A) Increase the number of particles inside the container. B) Increase the temperature. C) Decrease the volume of the container. D) All of these. Show Answer Correct Answer: D) All of these. 12. Which one among the following is not a type of non-contact forces? A) Muscular force. B) Magnetic force. C) Gravitational force. D) Electrostatic force. Show Answer Correct Answer: A) Muscular force. 13. Speed of the body is defined as the distance travelled by the body in one second A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 14. What happens to the speed of an object if the applied force acts in the direction opposite to the direction of motion of an object A) Decreases. B) Increases. C) Remains same. D) All may be true. Show Answer Correct Answer: A) Decreases. 15. The pressure exerted by a fluid on the sides of its vessel is called ..... pressure A) Upward. B) Lateral. C) Vertical. D) Downward. Show Answer Correct Answer: B) Lateral. 16. The SI unit of pressure is Pascal, is also denoted by: A) M$^{2}$/N. B) N/m$^{2}$. C) N/m. D) None of these. Show Answer Correct Answer: B) N/m$^{2}$. 17. Leaves fall on the ground due to A) Elctrostatic force. B) Magnetic Force. C) Gravitational Force. D) Muscular Force. Show Answer Correct Answer: C) Gravitational Force. 18. What is the force that works against motion? A) Friction. B) Push. C) Gravitational force. D) Magnetic force. Show Answer Correct Answer: A) Friction. 19. Why is the atmospheric pressure at a higher altitude lower? A) Temperature is high. B) Density of air is high. C) The layer of air is thin. D) The volume of air does not change. Show Answer Correct Answer: C) The layer of air is thin. 20. Train come to railway station and try to stop, show ..... motion A) Uniform. B) Non uniform. C) Oscillatory. D) None of the above. Show Answer Correct Answer: B) Non uniform. 21. Motion of an object in a straight line is called ..... A) Curvilinear. B) Rectilinear. C) Random. D) None of the above. Show Answer Correct Answer: B) Rectilinear. 22. Pressure is directly proportional to A) Force. B) Area. C) Mass. D) Volume. Show Answer Correct Answer: A) Force. 23. What is the value of atmospheric pressure at sea level? A) 76 mm column of mercury. B) 76 cm column of mercury. C) 760 mm column of mercury. D) Both B) and C). Show Answer Correct Answer: D) Both B) and C). 24. What does Hooke's law of elasticity state? A) Within the elasticity limit, stress is directly proportional to strain. B) Within the stress limit, strain is directly proportional to elastic. C) Within the elasticity limit, stress is inversely proportional to strain. D) None of these. Show Answer Correct Answer: A) Within the elasticity limit, stress is directly proportional to strain. 25. Which of the following produces least friction? A) Rolling Friction. B) Sliding Friction. C) Static Friction. D) None of the above. Show Answer Correct Answer: A) Rolling Friction. ← PreviousNext →Related QuizzesClass 8 Science Chapter 11 Force And Pressure Quiz 1Class 8 Science Chapter 11 Force And Pressure Quiz 2Class 8 Science Chapter 11 Force And Pressure Quiz 3Class 8 Science Chapter 11 Force And Pressure Quiz 4Class 8 Science Chapter 11 Force And Pressure Quiz 5Class 8 Science Chapter 11 Force And Pressure Quiz 6Class 8 Science Chapter 11 Force And Pressure Quiz 8Class 8 Science Chapter 11 Force And Pressure Quiz 9Class 8 Science Chapter 11 Force And Pressure Quiz 10Class 8 Science Chapter 11 Force And Pressure Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books