Exploring Forces Class 8 MCQ Science Chapter 5

CBSE MCQ Solutions for Class 8 Science Curiosity Chapter 5 - Exploring Forces are revised and updated for the academic session 2026-27. These carefully designed multiple-choice questions help students build a strong understanding of important concepts such as force and its effects, contact and non-contact forces, friction, gravity, buoyancy, and balanced and unbalanced forces. Regular practice of these MCQs improves conceptual clarity, enhances analytical thinking, and helps students prepare effectively for school exams and competitive assessments. By solving objective questions, students can strengthen their problem-solving skills, boost confidence, and develop a better understanding of how forces influence objects in everyday life.

Important Topics Covered in Exploring Forces Class 8 Science Chapter 5

Class 8 Science Chapter 5, Exploring Forces, introduces students to the fundamental concepts of force and its effects on objects. The chapter explains how forces influence motion, change the shape of objects, and play a vital role in everyday life. Students learn about different types of forces, including contact and non-contact forces, friction, gravity, magnetic force, electrostatic force, buoyancy, and weight measurement. Understanding these concepts helps build a strong foundation for higher-level physics and improves problem-solving skills for exams. The following are the most important topics covered in this chapter:

• Force as a Push or Pull
• Definition of Force
• Force as an Interaction Between Objects
• SI Unit of Force – Newton (N)
• Effects of Force on Objects
• Force Can Make an Object Move
• Force Can Stop a Moving Object
• Force Can Change Speed
• Force Can Change Direction of Motion
• Force Can Change Shape of an Object
• Contact Forces
• Non-Contact Forces
• Muscular Force
• Uses of Muscular Force in Humans and Animals
• Frictional Force
• Causes of Friction
• Friction Due to Surface Irregularities
• Friction on Rough and Smooth Surfaces
• Friction in Air and Water
• Magnetic Force
• Attraction and Repulsion Between Magnets
• Like and Unlike Magnetic Poles
• Electrostatic Force
• Static Electric Charges
• Charging by Rubbing
• Positive and Negative Charges
• Gravitational Force
• Gravity and Falling Objects
• Vertical Motion Under Gravity
• Weight of an Object
• SI Unit of Weight – Newton (N)
• Measurement of Weight
• Spring Balance
• Range and Least Count of a Spring Balance
• Difference Between Mass and Weight
• Weight on Earth, Moon, Mars, Venus, and Jupiter
• Upthrust or Buoyant Force
• Floating and Sinking of Objects
• Factors Affecting Buoyancy
• Archimedes’ Principle
• Everyday Applications of Force and Motion

Download Class 8 Science Chapter 5 MCQ with Answers PDF

Download Exploring Forces Class 8 MCQ Science Chapter 5 PDF with answers, revised according to the latest CBSE syllabus for Session 2026-27. These chapter-wise class 8 science MCQs help students revise important concepts such as force, friction, gravity, buoyancy, and weight measurement. The Exploring Forces Class 8 MCQ Science Chapter 5 with Answers PDF is ideal for quick revision, exam preparation, and self-assessment. Practice these objective questions regularly to improve conceptual understanding and score better in exams.

Class 8 Science Chapter 5 Exploring Forces MCQ with Answers

1. What is a force?

A. Energy

B. Work

C. Push or pull

D. Motion

Answer: C. Push or pull

2. The SI unit of force is:

A. Joule

B. Newton

C. Watt

D. Pascal

Answer: B. Newton

3. The symbol of force is:

A. J

B. W

C. N

D. P

Answer: C. N

4. A force can make an object:

A. Change colour

B. Move from rest

C. Increase mass

D. Produce light

Answer: B. Move from rest

5. Force can change the:

A. Shape of an object

B. Speed of an object

C. Direction of motion

D. All of these

Answer: D. All of these

6. At least how many objects must interact for a force to act?

A. One

B. Two

C. Three

D. Four

Answer: B. Two

7. Which of the following is a contact force?

A. Gravity

B. Magnetic force

C. Muscular force

D. Electrostatic force

Answer: C. Muscular force

8. Walking is possible due to:

A. Magnetic force

B. Muscular force

C. Electrostatic force

D. Gravity only

Answer: B. Muscular force

9. Which animal uses muscular force for movement?

A. Deer

B. Fish

C. Bird

D. All of these

Answer: D. All of these

10. Friction is a:

A. Contact force

B. Non-contact force

C. Magnetic force

D. Gravitational force

Answer: A. Contact force

11. Friction acts:

A. Along motion

B. Opposite to motion

C. Upward

D. Downward

Answer: B. Opposite to motion

12. A rolling ball stops because of:

A. Gravity

B. Friction

C. Magnetism

D. Electricity

Answer: B. Friction

13. Friction arises due to:

A. Weight

B. Irregularities on surfaces

C. Heat

D. Light

Answer: B. Irregularities on surfaces

14. Friction is greater on:

A. Smooth surfaces

B. Rough surfaces

C. Wet surfaces only

D. Plastic surfaces

Answer: B. Rough surfaces

15. Air exerts:

A. Weight only

B. Friction only

C. Force of friction

D. No force

Answer: C. Force of friction

16. Which force acts without physical contact?

A. Muscular force

B. Frictional force

C. Non-contact force

D. Applied force

Answer: C. Non-contact force

17. Magnetic force is a:

A. Contact force

B. Non-contact force

C. Muscular force

D. Frictional force

Answer: B. Non-contact force

18. Like poles of magnets:

A. Attract

B. Repel

C. Stick permanently

D. Do nothing

Answer: B. Repel

19. Unlike poles of magnets:

A. Repel

B. Attract

C. Rotate

D. Break

Answer: B. Attract

20. Magnetic force acts on:

A. Magnetic materials

B. Magnets

C. Both A and B

D. Wood only

Answer: C. Both A and B

21. Static charges are produced by:

A. Heating

B. Rubbing

C. Cooling

D. Melting

Answer: B. Rubbing

22. A plastic scale rubbed with polythene attracts:

A. Stones

B. Water

C. Small paper pieces

D. Iron rods

Answer: C. Small paper pieces

23. Electrical charges produced by rubbing are called:

A. Moving charges

B. Static charges

C. Neutral charges

D. Magnetic charges

Answer: B. Static charges

24. An object having static charge is called:

A. Neutral object

B. Charged object

C. Heavy object

D. Magnetic object

Answer: B. Charged object

25. Like charges:

A. Attract

B. Repel

C. Disappear

D. Neutralize immediately

Answer: B. Repel

26. Unlike charges:

A. Repel

B. Attract

C. Rotate

D. Vibrate

Answer: B. Attract

27. Electrostatic force is:

A. Contact force

B. Non-contact force

C. Frictional force

D. Muscular force

Answer: B. Non-contact force

28. The two types of electrical charges are:

A. North and South

B. Positive and Negative

C. East and West

D. Heavy and Light

Answer: B. Positive and Negative

29. The Earth attracts objects by:

A. Magnetic force

B. Electrostatic force

C. Gravitational force

D. Friction

Answer: C. Gravitational force

30. Gravity is:

A. Contact force

B. Non-contact force

C. Muscular force

D. Frictional force

Answer: B. Non-contact force

31. Gravitational force is always:

A. Repulsive

B. Attractive

C. Neutral

D. Temporary

Answer: B. Attractive

32. An object thrown upward eventually:

A. Disappears

B. Keeps moving up forever

C. Falls back to Earth

D. Stops in air permanently

Answer: C. Falls back to Earth

33. Motion under gravity in a vertical direction is called:

A. Circular motion

B. Vertical motion

C. Oscillatory motion

D. Rotational motion

Answer: B. Vertical motion

34. Weight is:

A. Amount of matter

B. Force exerted by Earth on an object

C. Volume of an object

D. Size of an object

Answer: B. Force exerted by Earth on an object

35. SI unit of weight is:

A. Kilogram

B. Gram

C. Newton

D. Metre

Answer: C. Newton

36. Weight is measured using:

A. Beam balance

B. Spring balance

C. Stopwatch

D. Thermometer

Answer: B. Spring balance

37. A spring balance measures:

A. Temperature

B. Length

C. Weight

D. Volume

Answer: C. Weight

38. The range of the spring balance shown in the chapter is:

A. 0–5 N

B. 0–8 N

C. 0–10 N

D. 0–20 N

Answer: C. 0–10 N

39. The least count of the spring balance shown is:

A. 0.1 N

B. 0.2 N

C. 0.5 N

D. 1 N

Answer: B. 0.2 N

40. Mass is measured in:

A. Newton

B. Joule

C. Gram and kilogram

D. Watt

Answer: C. Gram and kilogram

41. Mass remains:

A. Different everywhere

B. Constant everywhere

C. Zero on Moon

D. Infinite on Earth

Answer: B. Constant everywhere

42. Weight changes because:

A. Mass changes

B. Gravity changes

C. Shape changes

D. Colour changes

Answer: B. Gravity changes

43. A 1 kg object weighs about ____ on Earth.

A. 1.6 N

B. 3.8 N

C. 10 N

D. 25.4 N

Answer: C. 10 N

44. A 1 kg object weighs about ____ on the Moon.

A. 1.6 N

B. 10 N

C. 9 N

D. 25.4 N

Answer: A. 1.6 N

45. The upward force exerted by a liquid is called:

A. Friction

B. Weight

C. Buoyant force

D. Magnetic force

Answer: C. Buoyant force

46. Another name for buoyant force is:

A. Upthrust

B. Gravity

C. Tension

D. Pull force

Answer: A. Upthrust

47. If gravitational force is greater than buoyant force, an object:

A. Floats

B. Sinks

C. Rotates

D. Expands

Answer: B. Sinks

48. If gravitational force equals buoyant force, an object:

A. Burns

B. Sinks

C. Floats

D. Breaks

Answer: C. Floats

49. Archimedes was a famous:

A. Indian scientist

B. Greek scientist

C. Roman king

D. Astronaut

Answer: B. Greek scientist

50. According to Archimedes’ Principle, the upward force on an immersed object equals:

A. Its mass

B. Weight of displaced liquid

C. Volume of object

D. Density of air

Answer: B. Weight of displaced liquid

Tips to Prepare for Class 8 Science MCQs Chapter 5 Exploring Forces

Preparing for the Class 8 Science Chapter 5 Exploring Forces MCQs becomes easier when you focus on understanding concepts rather than memorizing facts. Since most objective questions are based on definitions, applications, and real-life examples of forces, regular revision and practice are essential.

• Learn the definition of force and remember that it is a push or pull resulting from the interaction between objects.
• Understand the effects of force, such as changing an object's speed, direction, shape, or state of motion.
• Differentiate clearly between contact forces and non-contact forces.
• Revise examples of muscular force, frictional force, magnetic force, electrostatic force, and gravitational force.
• Remember that friction always acts opposite to the direction of motion and is greater on rough surfaces.
• Practice questions related to attraction and repulsion of magnetic poles and electric charges.
• Learn the concepts of gravity, weight, and vertical motion thoroughly.
• Understand the difference between mass and weight, along with their units.
• Revise how a spring balance is used to measure weight and learn terms such as range and least count.
• Study the concepts of buoyant force (upthrust), floating and sinking, and Archimedes' Principle.
• Solve chapter-wise MCQs regularly to improve speed and accuracy.
• Pay special attention to diagrams, activities, and "A Step Further" sections, as many MCQs are based on these concepts.
• Make short notes of important definitions, formulas, units, and key facts for quick revision before exams.
• Attempt mock tests and previous-year objective questions to identify weak areas and improve confidence.