This quiz works best with JavaScript enabled. Home > Class 8 > 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 (25 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= force/mass. B) Pressure =mass/volume. C) Pressure=area/force. D) Pressure=force/area. Show Answer Correct Answer: D) 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) 21 N/m2. B) 20 N/m2. C) 25 N/m2. D) 23 N/m2. Show Answer Correct Answer: A) 21 N/m2. 5. What will be the speed of the object if it is at rest A) Infinite. B) Zero. C) Very high. D) Very slow. Show Answer Correct Answer: B) Zero. 6. Which of the following is a contact force A) Magnetic force. B) Electrostatic force. C) Gravitational force. D) Friction force. Show Answer Correct Answer: D) 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) Low atmospheric pressure inside. C) High atmospheric pressure inside. D) High electrostatic force creates inside. Show Answer Correct Answer: B) 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) Speed * force. B) Force * density. 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) Contact force. B) Spring force. C) Non-contact force. D) Magnetic force. Show Answer Correct Answer: A) Contact force. 15. The strength of force is expressed by? A) Weight. B) Mass. C) Magnitude. D) Longitudinal force. Show Answer Correct Answer: C) Magnitude. 16. The force exerted by the earth to pull the object towards itself is called A) Electrostatic force. B) Gravitational force. C) Muscular force. D) Magnetic force. Show Answer Correct Answer: B) Gravitational force. 17. Identify the agent exerting the force while taking out paste from a toothpaste tube A) Toothpaste tube. B) Toothpaste filled in the tube. C) Muscles of our fingers. D) No force required. Show Answer Correct Answer: C) Muscles of our fingers. 18. FORCE EXERTED BY A CHARGED BODY ON ANOTHER CHARGED BODY IS CALLED A) CONTACT FORCE. B) ELECTRIC FORCE. C) MAGNETIC FORCE. D) THRUST. Show Answer Correct Answer: B) ELECTRIC FORCE. 19. A ..... exerted by an object on another is called force A) Push or pull. B) Contact or non contact force. C) Pressure. D) Magnitude. Show Answer Correct Answer: A) 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) Electric. B) Unbalanced. C) Balanced. D) Nuclear. Show Answer Correct Answer: B) 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. Gravity is- A) Repulsive force. B) Attractive force. C) Repulsive+ Attractive force. D) Not a force. Show Answer Correct Answer: B) Attractive force. 25. 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) Propelling force of gases emitted by combustion of fuel. B) Magnetic force of Earth. C) Gravitational force of Earth. D) No force acting downwards. Show Answer Correct Answer: C) Gravitational force of Earth. 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