This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Science Chapter 11 Force And Pressure – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 11 Force And Pressure Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A book is kept on horizontal table. How many forces are acting on it? A) 0. B) 1. C) 2. D) 3. Show Answer Correct Answer: C) 2. 2. Relative density has no unit because ..... A) It's a rato. B) It's a number. C) It's an inherent properity of substance. D) It's a ratio of two simillar quantities. Show Answer Correct Answer: D) It's a ratio of two simillar quantities. 3. What is the unit to MEASURE force? A) Kilogram. B) Meter. C) Pounds. D) Newton. Show Answer Correct Answer: D) Newton. 4. When force is applied on a rigid body A) Shape of the body changes. B) Size of the body changes. C) The body changes its state of motion. D) None of these. Show Answer Correct Answer: C) The body changes its state of motion. 5. Why is a barometer used to determine the atmospheric pressure of an area? A) To get accurate readings. B) As humans do not have the capability to measure. C) As it is a non constant quantity. D) As it is same everywhere. Show Answer Correct Answer: C) As it is a non constant quantity. 6. State of motion is described by A) Position of rest. B) Position of motion. C) Both by the state of rest or motion. D) None of these. Show Answer Correct Answer: C) Both by the state of rest or motion. 7. A body is said to be under balanced forces when the resultant force applied on that body is ..... A) One. B) Zero. C) Infinite. D) None of these. Show Answer Correct Answer: B) Zero. 8. We know that force can change some properties of objects. Which of the following properties does force NOT change? A) Shape. B) Direction. C) Colour. D) Speed. Show Answer Correct Answer: C) Colour. 9. Sea divers wear special protective suits to A) Protect themselves from dangerous sea creatures. B) Camouflage themselves. C) Protect themselves from the pressure exerted by the sea. D) None of the above. Show Answer Correct Answer: C) Protect themselves from the pressure exerted by the sea. 10. Muscular force is also called A) Non contact force. B) Contact force. C) Gravitational force. D) Magnetic force. Show Answer Correct Answer: B) Contact force. 11. The further the force is from the pivot, the greater its turning effect. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. Pressure is- A) Power exerted on a body. B) Energy used by the body. C) Force exerted per unit length. D) Force exerted per unit area. Show Answer Correct Answer: D) Force exerted per unit area. 13. A porter carrying a heavy luggage on his head always keep a round wrap of cloth on his head. why? A) It decreases the weight of luggage. B) To protect from injury. C) It decreases the area of contact between is head and luggage. D) To show to other people. Show Answer Correct Answer: C) It decreases the area of contact between is head and luggage. 14. If the horse reared up on 2 legs what effect would it have on the pressure? A) It will exert half the pressure it did before. B) It will exert the same pressure it did before. C) It will exert twice the pressure it did before. D) It will exert four times the pressure it did before. Show Answer Correct Answer: C) It will exert twice the pressure it did before. 15. What is Friction? A) Push. B) Pull. C) Both (A) and (B). D) None of these. Show Answer Correct Answer: C) Both (A) and (B). 16. Force / Area:Pressure::Mass / Volume: ..... A) Relative Density. B) Density. C) Atmospheric pressure. D) None of the above. Show Answer Correct Answer: B) Density. 17. Unit for Pressure is- A) Newton (Pascal). B) N/m (Pascal). C) N2/m (Pascal). D) N/m (Pascal). Show Answer Correct Answer: B) N/m (Pascal). 18. The cutting edge of a knife is sharpened because A) The reduced area of sharp edge exerts more force. B) The reduced area of sharp edge exerts more pressure. C) The Increased area of sharp edge exerts more force. D) The increased area of sharp edge exerts more pressure. Show Answer Correct Answer: B) The reduced area of sharp edge exerts more pressure. 19. In which direction liquid exerts pressure A) In all directions. B) Sideways. C) Downward. D) All of these. Show Answer Correct Answer: A) In all directions. 20. A rusty bolt is hard to get turned. What could be done to help get the bolt turned? A) Increase the lever arm. B) Decrease the force. C) Apply the force at a 30 degree angle. D) None of the above. Show Answer Correct Answer: A) Increase the lever arm. 21. Forces are always due to some ..... A) Reason. B) Contact. C) Irregularity. D) Interaction. Show Answer Correct Answer: D) Interaction. 22. The force acting on a unit area of a surface is called A) Force. B) Pressure. C) Friction. D) None of the above. Show Answer Correct Answer: B) Pressure. 23. It is easier to cut vegetables with sharp end of knife rather than with its blunt end because A) Smaller area provides more pressure for the applied force. B) Smaller area provides less pressure for the applied force. C) None of the above. D) None of the above. Show Answer Correct Answer: A) Smaller area provides more pressure for the applied force. 24. It is difficult to walk on an oily floor because A) Force of friction is very less. B) Force of friction is very high. C) We don't like to walk on oily floor. D) None of these. Show Answer Correct Answer: A) Force of friction is very less. 25. A balloon was pressed against a wall after it was rubbed with a cloth. The balloon sticks to the wall. What force is causing the balloon to stick to the wall? A) Electrostatic Force. B) Friction. C) Magnetic Force. D) Gravity. Show Answer Correct Answer: A) Electrostatic Force. ← 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 7Class 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