This quiz works best with JavaScript enabled. Home > Cbse > Class 8 > Science > Force And Pressure > Class 8 Science Chapter 11 Force And Pressure – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 11 Force And Pressure Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When the forces are applied in opposite directions, the resultant force will be ..... A) The sum between the magnitudes of the two forces being applied. B) The difference between the magnitudes of the two forces being applied. C) The product between the magnitudes of the two forces being applied. D) None of these. Show Answer Correct Answer: B) The difference between the magnitudes of the two forces being applied. 2. What is the equation used to calculate pressure? A) Pressure=area/force. B) Pressure=force/area. C) Pressure =mass/volume. D) Pressure= force/mass. Show Answer Correct Answer: B) Pressure=force/area. 3. Physical quantities which have only magnitude. A) Vector. B) Scaler. C) None of these. D) None of the above. Show Answer Correct Answer: B) Scaler. 4. A force of 105 N is applied on a table, if the area of contact between the hand pushing the table and the table is 5 m2. Calculate pressure applied. A) 20 N/m2. B) 21 N/m2. C) 23 N/m2. D) 25 N/m2. Show Answer Correct Answer: B) 21 N/m2. 5. What will be the speed of the object if it is at rest A) Zero. B) Very high. C) Infinite. D) Very slow. Show Answer Correct Answer: A) Zero. 6. Which of the following is a contact force A) Magnetic force. B) Gravitational force. C) Friction force. D) Electrostatic force. Show Answer Correct Answer: C) Friction force. 7. When We Press The Rubber Sucker On A Flat, Smooth Surface. A Rubber Sucker Stays Attached Firmly To A Flat Surface Due To: A) Gravity of the earth inside. B) High electrostatic force creates inside. C) High atmospheric pressure inside. D) Low atmospheric pressure inside. Show Answer Correct Answer: D) Low atmospheric pressure inside. 8. Which of the following is proper example(s) to explain that force on an object may change its shape A) A ball of dough rolled into chapati. B) Pressing a rubber ball kept on table. C) Making model using clay. D) All of the above. Show Answer Correct Answer: D) All of the above. 9. Moment of force can be calculated by using which formula? A) Force * density. B) Speed * force. C) Distance * force. D) Depth * speed. Show Answer Correct Answer: C) Distance * force. 10. Atmospheric pressure increases as you move towards lower elevations and decreases as you move into higher elevations. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. What makes a balloon stretch as it is filled with air A) Air becomes lighter inside the balloon. B) Air becomes heavier inside the balloon. C) Gas exerts pressure on the walls of container. D) All of above. Show Answer Correct Answer: C) Gas exerts pressure on the walls of container. 12. Unit of pressure is? A) N/m$^{2}$. B) Pascal. C) Both N/m$^{2}$ and Pascal. D) Square meter. Show Answer Correct Answer: C) Both N/m$^{2}$ and Pascal. 13. A camel can walk in deserts more easily as compared to horse donkey and others because its A) Feet are smaller. B) Weight is lesser. C) Feet are broader. D) Heavier body. Show Answer Correct Answer: C) Feet are broader. 14. Opening the door is an example of which type of force? A) Magnetic force. B) Non-contact force. C) Contact force. D) Spring force. Show Answer Correct Answer: C) Contact force. 15. The strength of force is expressed by? A) Weight. B) Magnitude. C) Longitudinal force. D) Mass. Show Answer Correct Answer: B) Magnitude. 16. The force exerted by the earth to pull the object towards itself is called A) Electrostatic force. B) Magnetic force. C) Gravitational force. D) Muscular force. Show Answer Correct Answer: C) Gravitational force. 17. Identify the agent exerting the force while taking out paste from a toothpaste tube A) Muscles of our fingers. B) Toothpaste tube. C) No force required. D) Toothpaste filled in the tube. Show Answer Correct Answer: A) Muscles of our fingers. 18. FORCE EXERTED BY A CHARGED BODY ON ANOTHER CHARGED BODY IS CALLED A) ELECTRIC FORCE. B) CONTACT FORCE. C) MAGNETIC FORCE. D) THRUST. Show Answer Correct Answer: A) ELECTRIC FORCE. 19. A ..... exerted by an object on another is called force A) Contact or non contact force. B) Pressure. C) Magnitude. D) Push or pull. Show Answer Correct Answer: D) Push or pull. 20. A ball rolling on the ground slows down and finally stops. This is because of A) Force. B) Less force applied. C) Friction. D) None of the above. Show Answer Correct Answer: C) Friction. 21. When a wooden block is pushed, the force acting on it is ..... A) Nuclear. B) Electric. C) Balanced. D) Unbalanced. Show Answer Correct Answer: D) Unbalanced. 22. When comb gets rubbed against hair, it develops ..... an charge on it. A) Electrostatic. B) Gravatational. C) Mechenical. D) None of the above. Show Answer Correct Answer: A) Electrostatic. 23. A liquid can exert pressure on the side of container as well as at the bottom of the container A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. A rocket has been fired upwards to launch a satellite in its Orbit name the forces acting downwards on the rocket immediately after leaving the launching pad A) Magnetic force of Earth. B) No force acting downwards. C) Propelling force of gases emitted by combustion of fuel. D) Gravitational force of Earth. Show Answer Correct Answer: D) Gravitational force of Earth. 25. The $\rho$ $\rho$ A) Height. B) Pressure. C) Gravity. D) Density. Show Answer Correct Answer: D) Density. 26. Liquids do not seek their own level regardless of the shape and cross sectional areas of their vessels. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 27. A horse is standing next to a cart without touching it. The horse is applying a force on the cart. True or false? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 28. Two boys A and B are applying force on a block. If the block moves towards the boy A, which one of the following statements is correct? A) Magnitude of force applied by A is greater than that of B. B) Magnitude of force applied by A is smaller than that of B. C) Net force on the block is towards B. D) Magnitude of force applied by A is equal to that of B. Show Answer Correct Answer: B) Magnitude of force applied by A is smaller than that of B. 29. Friction is a ..... force A) Electrostatic. B) Contact. C) Magnetic. D) Non contact. Show Answer Correct Answer: B) Contact. 30. Which is the instrument used to measure Atmospheric Pressure. A) Thermometer. B) Speedometer. C) Barometer. D) None of the above. Show Answer Correct Answer: C) Barometer. 31. Which of the following is NOT an example of the force of gravity? A) A leaf falling from a tree. B) A boy pushing a cart on a level plane. C) A diver jumping into a swimming pool. D) A stone is falling from the cilff. Show Answer Correct Answer: B) A boy pushing a cart on a level plane. 32. Leaves fall down on the ground due to A) Gravitational force. B) Electrostatic force. C) Magnetic force. D) Muscular force. Show Answer Correct Answer: A) Gravitational force. 33. The frictional force is an example of A) Contact force. B) Balanced force. C) Unbalanced force. D) Non-contact force. Show Answer Correct Answer: A) Contact force. 34. During dry weather, while combing hair, sometimes we experience hair flying apart. The force responsible for this is ..... A) Force of gravity. B) Magnetic force. C) Force of friction. D) Electrostatic force. Show Answer Correct Answer: D) Electrostatic force. 35. SI unit of force is A) Pascal/second. B) Pascal. C) Newton/second. D) Newton. Show Answer Correct Answer: D) Newton. 36. Force of a person sleeping on a bed is 500N. Area is 4 m$^{2}$ A) 100 Pascals. B) 150 Pascals. C) 115 Pascals. D) 125 Pascals. Show Answer Correct Answer: D) 125 Pascals. 37. UNEQUAL FORCES ACTING ON A GIVEN OBJECT ; THEIR RESULTANT FORCE IS NON ZERO IS KNOWN AS A) ELECTRIC FORCE. B) GRAVITATIONAL FORCE. C) BALANCED FORCE. D) UNBALANCED FORCE. Show Answer Correct Answer: D) UNBALANCED FORCE. 38. The force exerted by the charged body on another charged or uncharged body is called A) Electrostatic force. B) Gravitational force. C) Magnetic force. D) Muscular force. Show Answer Correct Answer: A) Electrostatic force. 39. Magnetic force is A) Contact force. B) Non-contact force. C) Both a and b. D) None of these. Show Answer Correct Answer: B) Non-contact force. 40. Apart from N/cm$^{2}$ and N/m$^{2}$, what is the unit of measurement for pressure? A) Pascal. B) Grams. C) Meters. D) Millitres. Show Answer Correct Answer: A) Pascal. 41. Moment is a measure of the turning effect of a force. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 42. Pressure can be measured in Pascales (Pa) or Newtons per square metre. 1 Pa = 1N/m2 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 43. When two forces act in opposite directions, then the resultant force acting on it will be A) Sum of two forces. B) Difference between two forces. C) Both of these. D) None of these. Show Answer Correct Answer: B) Difference between two forces. 44. S.I unit of weight is A) Newton. B) Newton meter. C) Kilogram. D) Gram. Show Answer Correct Answer: A) Newton. 45. The force exerted by a charged bodyon another charged or uncharged bodyis known as ..... force. A) Gravitational. B) Muscular. C) Magnetic. D) Electrostatic. Show Answer Correct Answer: D) Electrostatic. 46. Which of the following is a non contact force A) Magnetic force. B) Frictional force. C) Mechanical force. D) Muscular force. Show Answer Correct Answer: A) Magnetic force. 47. Pressure exerted by a liquid increases with depth A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 48. The pressure exerted by someone would be greater if they wear high heels than if they wear slippers A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 49. Spring balance is a simple device that can be used for measuring A) Force. B) Pressure. C) Surface area. D) Volume. Show Answer Correct Answer: A) Force. 50. Opening a doar is an example of A) Contact force. B) Non contact force. C) Gravitational force. D) None of the above. Show Answer Correct Answer: A) Contact force. 51. Pressure can be measured in Pascals or Newton per square meter. 1 Pa = 1 N / m2 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 52. What is meant by force A) A force Is a cause which tends to results in movement or change in size or shape of the body. B) Force is that cause which changes the state of a body or changes the size or shape of the body. C) Both option A and B. D) None of these. Show Answer Correct Answer: C) Both option A and B. 53. Which type of force is force of gravity A) Contact force and attraction. B) Non contact force and attraction. C) Contact force and repulsive. D) Non contact force and repulsive. Show Answer Correct Answer: B) Non contact force and attraction. 54. A Spring Balance is used for measuring A) Speed. B) Pressure. C) Weight. D) None of the above. Show Answer Correct Answer: C) Weight. 55. What is strength of force called? A) Altitude. B) Magnitude. C) Attitude. D) None. Show Answer Correct Answer: B) Magnitude. 56. A force of 4 N acts on a lever 2 m from the pivot. What is the moment? A) 6 Nm. B) 3 Nm. C) 2 Nm. D) 8 Nm. Show Answer Correct Answer: D) 8 Nm. 57. Some Mustard Oil Is Kept In A Beaker. It Will Exert Pressure: A) Downwards only. B) Sideways only. C) Upwards only. D) In all directions. Show Answer Correct Answer: D) In all directions. 58. Pressure exerted by water at the bottom of the container depends on the ..... of its column. A) Width. B) Depth. C) Height. D) None of these. Show Answer Correct Answer: C) Height. 59. The SI unit of density of a substance is ..... A) Gm / cc. B) Pa / m$^{2}$. C) Kg / m$^{3}$. D) None of the above. Show Answer Correct Answer: C) Kg / m$^{3}$. 60. Magnet is an example of ..... A) Muscular force. B) Friction force. C) Contact force. D) Non-contact force. Show Answer Correct Answer: D) Non-contact force. 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