This quiz works best with JavaScript enabled. Home > Cbse > Class 8 > Science > Force And Pressure > Class 8 Science Chapter 11 Force And Pressure – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 11 Force And Pressure Quiz 5 (56 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Force acting normal to surface is called A) Upthrust. B) Buoyant force. C) Weight. D) Thrust. Show Answer Correct Answer: D) Thrust. 2. Assertion (A):Magnetic force is an example of contact force. Reason(R):In contact force bodies are in direct contact. A) Both A and R are true, and R is the correct explanation of the assertion. B) Both A and R are true, but R is not the correct explanation of the assertion. C) A is true, but R is false. D) A is false, but R is true. Show Answer Correct Answer: A) Both A and R are true, and R is the correct explanation of the assertion. 3. FORCE EXERTED BY THE ACTION OF MUSCLES IN THE BODY OF LIVING BEINGS IS CALLED AS A) MUSCULAR FORCE. B) THRUST. C) ELECTRIC FORCE. D) CONTACT FORCE. Show Answer Correct Answer: A) MUSCULAR FORCE. 4. Force acting per unit area is called A) Non-contact forces. B) Pressure. C) Contact forces. D) Force. Show Answer Correct Answer: B) Pressure. 5. Why water comes out of the pipes used for water supply through the leakage joints A) Because water always tends to flow out. B) It is easy for water to flow out. C) Because of pressure exerted by water on the walls. D) All of above. Show Answer Correct Answer: C) Because of pressure exerted by water on the walls. 6. How many types of forces are there? A) 2. B) 1. C) 4. D) 3. Show Answer Correct Answer: A) 2. 7. The S.I. units associated with force is A) Pascal. B) Meter. C) Meter square. D) Newton. Show Answer Correct Answer: D) Newton. 8. ..... forces do not change the state of rest or of motion of an object. A) Balanced. B) Imbalanced. C) All the above. D) None of the above. Show Answer Correct Answer: A) Balanced. 9. What happens to Atmospheric pressure when the height increases? A) It decreases. B) It increases. C) It remains the same. D) None of these. Show Answer Correct Answer: A) It decreases. 10. If We Release A Magnet Held In Our Hand, It Falls To The Ground. The Force Responsible For This Is: A) Electrostatic force. B) Gravitational force. C) Muscular force. D) Magnetic force. Show Answer Correct Answer: B) Gravitational force. 11. If In a tug-of-war, when two teams are pulling a rope, and the rope does not move towards any team, it implies that A) Equal Force is being applied in opposite direction. B) No force is applied in any direction. C) Equal force is being applied in the same direction. D) Cannot be explained. Show Answer Correct Answer: A) Equal Force is being applied in opposite direction. 12. If two forces are applied on one object in ..... direction to each other, a force equal to their difference acts on the object. A) Oppoisite. B) Same. C) All the above. D) None of the above. Show Answer Correct Answer: A) Oppoisite. 13. An object of mass 2 kg undergoes a change of velocity of 8m/s in 4s what is the force acting on it? A) 8n. B) That. C) Lion. D) 6N. Show Answer Correct Answer: C) Lion. 14. The force between two charged bodies is called A) Electrostatic force. B) Muscular force. C) Magnetic force. D) Gravitational force. Show Answer Correct Answer: A) Electrostatic force. 15. When you rub your hands together, which force is acting? A) Air resistance. B) Skin resistance. C) Friction. D) Gravity. Show Answer Correct Answer: C) Friction. 16. Identify the odd pair in the following. A) Magnetic force-Noncontact force. B) Friction-Contact force. C) Muscular Force-Contact force. D) Electrostatic force-Contact force. Show Answer Correct Answer: D) Electrostatic force-Contact force. 17. When two equal forces are acting on an object in opposite direction object will not move from its place A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. The same F acts on four different objects having the areas given below, one by one. In which case the pressure exerted will be the maximum? A) 50m.sq. B) 10m.sq. C) 100m.sq. D) 20m.sq. Show Answer Correct Answer: B) 10m.sq. 19. A tennis players hits a ball with a racket.Which object is the force applied on? A) Ball. B) Racket. C) Tennis Player. D) None of the above. Show Answer Correct Answer: A) Ball. 20. A liquid exerts the same pressure in all directions at all points lying at a given depth inside the liquid. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. The strength of force is expressed by its A) Weight. B) Mass. C) Longitudinal force. D) Magnitude. Show Answer Correct Answer: D) Magnitude. 22. An increase in the area on which force is applied will- A) Increase the Pressure. B) No change in Pressure. C) Decrease the Pressure. D) Change mass of the body. Show Answer Correct Answer: A) Increase the Pressure. 23. Distance can be zero. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 24. The pressure resulting from a force of 50 N exerted over an area of 5 m$^{2}$ is A) 10 N/m2. B) 10 N. C) 0.1 N. D) 0.1 Pa. Show Answer Correct Answer: A) 10 N/m2. 25. Force = pressure/area A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 26. FORCE OF INTERACTION BETWEEN A MAGNET AND ANOTHER (SUITABLE) OBJECT/MAGNET IS CALLED A) ELECTRIC FORCE. B) CONTACT FORCE. C) MAGNETIC FORCE. D) PRESSURE. Show Answer Correct Answer: C) MAGNETIC FORCE. 27. A coin when dropped left from certain height starts moving towards the earth under the influence of A) Electrostatic force. B) Gravitational force. C) Muscular force. D) Magnetic force. Show Answer Correct Answer: B) Gravitational force. 28. Interactive force between two charged body is known as A) Muscular force. B) Electrostatic force. C) Friction force. D) Gravitational force. Show Answer Correct Answer: B) Electrostatic force. 29. The sum of all forces acting on an object. A) Balanced Force. B) Net Force. C) Unbalanced Force. D) Contact Force. Show Answer Correct Answer: B) Net Force. 30. A cart gets pulled by animals is an example of which force?? A) Gravitational force. B) Muscular force. C) Push. D) Frictional force. Show Answer Correct Answer: B) Muscular force. 31. A PUSH OR PULL UPON AN OBJECT IS CALLED AS A) PRESSURE. B) CONTACT FORCE. C) THRUST. D) FORCE. Show Answer Correct Answer: D) FORCE. 32. We are able to drink a liquid through a straw because of A) Liquid Pressure. B) Atmospheric pressure. C) Viscosity. D) All of the above. Show Answer Correct Answer: B) Atmospheric pressure. 33. A football playertaking a penaltykick is ..... A) Pushing. B) Pulling. C) Lifting. D) Both A and B. Show Answer Correct Answer: A) Pushing. 34. In The Electric Bell Circuit, When The Circuit Is Completed, The Hammer Strikes The Gong. Which Of The Following Force Is Responsible For The Movement Of Hammer? A) Frictional force alone. B) Electrostatic force alone. C) Gravitational force alone. D) Magnetic force alone. Show Answer Correct Answer: D) Magnetic force alone. 35. When a body is at rest, there is no force acting on it. A) Right. B) Wrong. C) All the above. D) None of the above. Show Answer Correct Answer: B) Wrong. 36. The net force on an object is zero (0) if the two forces act on it in A) Opposite Direction. B) Same Direction. C) Sometimes opposite and sometimes same. D) All of the above. Show Answer Correct Answer: A) Opposite Direction. 37. A Force Can Produce Many Effects. Choose The Correct Statements: A) A force can change the speed of a moving object. B) A force can change the direction of a moving object. C) A force can change the shape and size of an object. D) All of the above. Show Answer Correct Answer: D) All of the above. 38. The pressure is Force unit per Area. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 39. A liquid exerts pressure in ..... direction. A) Upward. B) Downward. C) All. D) Sideways. Show Answer Correct Answer: C) All. 40. The buoyant force is greater if volume of the object is ..... A) Lesser. B) Greater. C) Equal. D) None of the above. Show Answer Correct Answer: B) Greater. 41. As we go higher, atomospheric pressure ..... A) Increases. B) Decreases. C) Remains same. D) Initially decreases and then increases. Show Answer Correct Answer: B) Decreases. 42. What is the acceleration experienced by a car of mass 2000kg when a force of 1200N acts on it? A) 24m/s$^{2}$. B) -6m/s$^{2}$. C) 6m/s$^{2}$. D) 0.6m/s$^{2}$. Show Answer Correct Answer: D) 0.6m/s$^{2}$. 43. At least ..... objects must interactfor a force to come into play. A) One. B) Two. C) Five. D) Three. Show Answer Correct Answer: B) Two. 44. A force of 20N is acting on a wheel to rotate it about an axle passing through its centre anticlockwise and diameter of wheel is 5m, find moment of force. A) 100Nm. B) 10Nm. C) 50Nm. D) Sink. Show Answer Correct Answer: C) 50Nm. 45. All objects in motion have ..... force acting on it in opposite direction. A) Frictional. B) Gravatational. C) Buoyant. D) None of the above. Show Answer Correct Answer: A) Frictional. 46. The north pole of a magnet ..... the north pole of another magnet. A) Attaches. B) Repels. C) Attracts. D) Sticks. Show Answer Correct Answer: B) Repels. 47. The Force Of 150 N Is Applied To An Object Of Area 3 M2. Calculate The Pressure. A) 50 N/m2. B) 100 N/m2. C) 147 N/m2. D) 25 N/m2. Show Answer Correct Answer: A) 50 N/m2. 48. When is more pressure developed?(choose 1 option) A) When there is less area and more thrust. B) Less pressure more area. C) All the above. D) None of the above. Show Answer Correct Answer: A) When there is less area and more thrust. 49. Why a ball rolling on the floor stops after some time A) Ball becomes light. B) Due to friction. C) Ball becomes heavy. D) Due to gravitational force. Show Answer Correct Answer: B) Due to friction. 50. If the area over which the force acts decreases, the pressure ..... A) Increases. B) Remains same. C) Also decreases. D) None of these. Show Answer Correct Answer: A) Increases. 51. If a car at rest accelerates uniformly to a speed of 144 km/h in 20 sec., it covers a distance of: A) 2980 cm. B) 20 cm. C) 400 m. D) 1440 cm. Show Answer Correct Answer: C) 400 m. 52. What is another word for altitude? A) Elevation. B) Circumference. C) Barometer. D) Weight. Show Answer Correct Answer: A) Elevation. 53. 1 Kg / m$^{3 }$= ..... A) 10$^{3}$ g / cm$^{3}$. B) 10$^{-3}$ g / cm$^{2}$. C) 100 g / cm$^{3}$. D) 1 g / cm$^{3}$. Show Answer Correct Answer: B) 10$^{-3}$ g / cm$^{2}$. 54. Which of these animals would probably cause the greatest pressure on the ground? A) A fat cow with big feet. B) A fat cow with small feet. C) A calf with big feet. D) A calf with small feet. Show Answer Correct Answer: B) A fat cow with small feet. 55. All pushes and pull are forces A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 56. What is the Unit for Torque A) W. B) Nm. C) J. D) N. Show Answer Correct Answer: B) Nm. ← PreviousRelated QuizzesScience QuizzesClass 8 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 4 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books