This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Science Chapter 11 Force And Pressure – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 11 Force And Pressure Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If a given force is applied on a smaller area of contact the pressure exerted by it A) Decreases. B) Increases. C) Does not change. D) None of the above. Show Answer Correct Answer: B) Increases. 2. Which of the following force is utilised in reducing air pollution by removing dust, soot and fly-ash particles from the smoke coming out of chimneys of factories? A) Magnetic Force. B) Gravitational force. C) Electrostatic Force. D) Frictional Force. Show Answer Correct Answer: C) Electrostatic Force. 3. A force may change the direction of motion of an object. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. Army tank tracks are useful for travelling through the mud because ..... A) They decrease the force the vehicle exerts on the ground. B) They increase the force the vehicle exerts on the ground. C) They decrease the pressure the vehicle exerts on the ground. D) They increase the pressure the vehicle exerts on theground. Show Answer Correct Answer: C) They decrease the pressure the vehicle exerts on the ground. 5. THE FORCE WHICH ACTS ONLY WHEN OBJECTS ARE IN PHYSICAL CONTACT WITH EACH OTHER IS CALLED AS A) FRICTIONAL FORCE. B) BALANCED FORCE. C) FORCE. D) THRUST. Show Answer Correct Answer: B) BALANCED FORCE. 6. How do you Calculate Pressure A) Force(N)/Area(m$^{2}$). B) Force(kg)/Area(mi$^{2}$). C) Area(m$^{2}$)/Force(N). D) None of the above. Show Answer Correct Answer: A) Force(N)/Area(m$^{2}$). 7. A wrench is used to tighten a nut. A 15N perpendicular force is applied 50cm away from the axis of rotation, and moves a distance of 10 cm as it turns. What is the torque applied to the wrench? A) 7.5 Nm. B) 1.5 Nm. C) 750 Nm. D) 150 Nm. Show Answer Correct Answer: A) 7.5 Nm. 8. THE PERPENDICULAR FORCE (THRUST) ACTING PER UNIT AREA OF THE SURFACE A) THRUST. B) PRESSURE. C) MUSCULAR FORCE. D) FRICTIONAL FORCE. Show Answer Correct Answer: B) PRESSURE. 9. Convert 10 kg to Newtons A) 0.098 N. B) 4.5 N. C) 100 N. D) 98 N. Show Answer Correct Answer: C) 100 N. 10. The SI unit of force is ..... A) Dyne. B) Joule. C) Newton. D) None of the above. Show Answer Correct Answer: C) Newton. 11. Pressure is measured in what units A) Newtons. B) M/s. C) Pascals. D) Moles. Show Answer Correct Answer: C) Pascals. 12. FORCE BETWEEN TWO SURFACES IN CONTACT; IT (USUALLY) ACTS OPPOSITE TO THE DIRECTION OF MOTION IS CALLED AS A) FRICTIONAL FORCE. B) GRAVITATIONAL FORCE. C) PRESSURE. D) THRUST. Show Answer Correct Answer: A) FRICTIONAL FORCE. 13. The unit Pascal was named after the french physicist: A) Blaise Pascal. B) Louis Pascal. C) Isaac Pascal. D) All the options are incorrect. Show Answer Correct Answer: A) Blaise Pascal. 14. The SI unit of Pressure is ..... A) N / m$^{2}$. B) N / m$^{3}$. C) Kg / m$^{3}$. D) Pa / m$^{2}$. Show Answer Correct Answer: A) N / m$^{2}$. 15. Push or pull to any object is termed as A) Pressure. B) Force. C) Heat. D) Energy. Show Answer Correct Answer: B) Force. 16. What is the unit of pressure? A) Pascal. B) N/m2. C) Newton. D) Both option 1 and 2. Show Answer Correct Answer: D) Both option 1 and 2. 17. Forces acting in the same direction on an object gets A) Diminished. B) Divided. C) Added. D) Subtracted. Show Answer Correct Answer: C) Added. 18. Which force/ forces acts while holding a bucket of water A) Magnetic force. B) Muscular force. C) Gravitational force. D) Both b and c. Show Answer Correct Answer: D) Both b and c. 19. When the first experiment on barometer was conducted, what was the length of the water column and mercury column? A) Water:10.3 m, Mercury:76cm. B) Mercury:59m, Water; 7m. C) Water:67m, Mercury:72 cm. D) None of the above. Show Answer Correct Answer: A) Water:10.3 m, Mercury:76cm. 20. Force per unit area is called A) Pressure. B) Dencity. C) Temperature. D) Atmosphere. Show Answer Correct Answer: A) Pressure. 21. When forces are going in the opposite direction of each other you should do what do find the net force A) Subtract. B) Add. C) Divide. D) Multiply. Show Answer Correct Answer: A) Subtract. 22. If two forces act in opposite direction, the net force is the addition between two forces. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 23. Force acts on an object may change A) Direction. B) Shape. C) Speed. D) All of the above. Show Answer Correct Answer: D) All of the above. 24. The force exerted by the atmosphere per unit area of the surface of the earth is called atmospheric pressure. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 25. What is the unit of measurement for pressure? A) Pascal. B) Grams. C) Milliters. D) Meters. Show Answer Correct Answer: A) Pascal. ← 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 7Class 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