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Class 11 Physics — Chapter 9: Mechanical Properties of Solids Online Test

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Class 11 Physics: Mechanical Properties of Solids Online Test (Paper 1)

Welcome to Paper 1! This is your foundation to build confidence and get you ready to tackle the challenges ahead.

  • Total Questions: 20
  • Time Allotted: 30 minutes
  • Passing Score: 40%
  • Randomization: No
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

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1 / 20

1. A material initially stressed to shows a stress of after 100 s at constant strain. What is the relaxation time ?

2 / 20

2. A boiler tube operates under stress of at . If the creep rate follows Norton’s law , what happens if stress doubles?

3 / 20

3. In an S–N curve (stress vs. number of cycles), what does the horizontal region represent?

4 / 20

4. In which of the following processes is strain hardening most beneficial?

5 / 20

5. Plastic deformation is accompanied by which atomic process?

6 / 20

6. For submarine hull design, which modulus is most relevant?

7 / 20

7. A material has Young’s modulus and bulk modulus . Find Poisson’s ratio .

8 / 20

8. A wire of length , area , elongates by under a load of . Find Young’s modulus.

9 / 20

9. A wire of length and area is stretched with stress of . If , calculate elongation.

10 / 20

10. What type of deformation occurs in the yield region?

11 / 20

11. Which industrial test uses Hooke’s law principle to check stiffness of materials?

12 / 20

12. A copper wire of length and cross-sectional area is subjected to a tensile force of . If , what is the elongation?

13 / 20

13. Which graph best represents the equation ?

14 / 20

14. The stress–strain graph in Hooke’s law region is:

15 / 20

15. A wire of length and cross-sectional area elongates by under a force of . What is the stress and strain?

16 / 20

16. Plasticity in solids refers to:

17 / 20

17. Which property is most important for designing wires used in electrical transmission?

18 / 20

18. Which of the following is an example of a linear elastic material?

19 / 20

19. A wire of length and area is subjected to a tensile force of . If its elongation is , what is the Young’s modulus of the material?

20 / 20

20. A steel wire of length and radius is subjected to a tensile force of . If Young’s modulus of steel is , what is the elongation of the wire?

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Class 11 Physics: Mechanical Properties of Solids Online Test (Paper 2)

Welcome to Paper 2! You’ve mastered the basics, and now it’s time to test your understanding with a more challenging set of questions.

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  • Total Questions: 30
  • Time Allotted: 45 minutes
  • Passing Score: 50%
  • Randomization: Yes
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 30

1. Why are aluminum alloys used in long-span roof trusses despite being less stiff than steel?

2 / 30

2. Which relation connects Young’s modulus , shear modulus , and Poisson’s ratio ?

3 / 30

3. Which one of the following materials has the highest Young’s modulus?

4 / 30

4. Why is creep prevention essential in nuclear reactors?

5 / 30

5. Why is mild steel preferred for making machine parts that undergo repeated loading?

6 / 30

6. A cube of side is subjected to a tangential displacement of at its top surface. What is the shear strain?

7 / 30

7. A rod is subjected to uniform stress of . If volume = , Young’s modulus = , find strain energy stored.

8 / 30

8. Which engineering method is used to prevent crack growth in aircraft structures?

9 / 30

9. Why is studying plastic deformation important in material science?

10 / 30

10. Which everyday object best demonstrates non-linear elastic deformation?

11 / 30

11. What is meant by linear elastic deformation?

12 / 30

12. A cantilever beam of length , breadth , depth is loaded at the free end with . If , calculate deflection at the free end.

13 / 30

13. Which everyday example demonstrates plastic deformation?

14 / 30

14. Which metal typically shows a distinct yield point on its stress–strain curve?

15 / 30

15. Which of the following is correct about elastic region and yield point?

16 / 30

16. A spring of spring constant is stretched by . What is the strain energy stored?

17 / 30

17. What is the correct formula for shear strain?

18 / 30

18. Which of the following is an almost perfectly elastic material?

19 / 30

19. What is the SI unit of strain?

20 / 30

20. A cylindrical rod of radius , length , is subjected to shear stress of . If shear modulus , find the lateral displacement of top face.

21 / 30

21. A steel rod of length , area , Young’s modulus , is subjected to stress . What is the strain energy stored per unit volume?

22 / 30

22. Which pair of properties are considered opposite to each other in solids?

23 / 30

23. In material testing, what does fracture toughness measure?

24 / 30

24. Which property does UTS measure in a material?

25 / 30

25. Which design feature helps prevent creep in power plant boiler tubes?

26 / 30

26. In the elastic region, the slope of the stress–strain curve is equal to:

27 / 30

27. Which microstructural feature is designed into superalloys to improve creep resistance?

28 / 30

28. A wire of original length and diameter is stretched by under a load of . Calculate Young’s modulus.

29 / 30

29. In material testing, why is it crucial to know the breaking point of a solid?

30 / 30

30. Which of the following best represents a case of elastic deformation?

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Class 11 Physics: Mechanical Properties of Solids Online Test (Paper 3)

Welcome to Paper 3! You’ve warmed up—now it's time to step up your game and conquer the challenge with tougher questions!

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  • Total Questions: 50
  • Time Allotted: 75 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 50

1. Between steel and rubber, which is more elastic in terms of Young’s modulus?

2 / 50

2. The formula is derived from:

3 / 50

3. If a material has UTS of and breaking stress of , which statement is correct?

4 / 50

4. Which of the following statements best distinguishes proportionality limit and elastic limit?

5 / 50

5. A material has Young’s modulus and bulk modulus . Find Poisson’s ratio .

6 / 50

6. A metal has , . Find Poisson’s ratio.

7 / 50

7. Which of the following is the property of being permanently stretched without rupture?

8 / 50

8. Which of the following is a dimensionless quantity?

9 / 50

9. What is the physical significance of Hooke’s law?

10 / 50

10. Why does a material fail at the breaking point?

11 / 50

11. What does toughness of a material represent?

12 / 50

12. For an incompressible material, Poisson’s ratio is:

13 / 50

13. Which of the following correctly represents volumetric strain?

14 / 50

14. Which mechanical property is most important for designing earthquake-resistant buildings?

15 / 50

15. Which of the following constants appears in Hooke’s law equation?

16 / 50

16. A beam of square cross-section side , length , is loaded centrally with . If , find central deflection.

17 / 50

17. Why is pre-stressed concrete used in structural engineering?

18 / 50

18. Which point on the stress–strain curve marks the end of elastic behaviour?

19 / 50

19. A copper wire is stretched beyond its elastic limit. What type of deformation occurs?

20 / 50

20. If a wire of length elongates by , the strain energy stored per unit volume is given by:

21 / 50

21. Which statement is true about strain?

22 / 50

22. Which of the following best represents non-linear elastic behavior?

23 / 50

23. The formula for strain in terms of applied force , length , area , and Young’s modulus is:

24 / 50

24. Which factor significantly accelerates stress relaxation in metals?

25 / 50

25. At high strain rates, metals tend to:

26 / 50

26. Which part of the stress–strain curve corresponds to permanent deformation?

27 / 50

27. Which formula best represents the true stress during strain hardening?

28 / 50

28. Which of the following equations estimates the stress intensity factor for fracture mechanics?

29 / 50

29. Why is fracture toughness higher in ductile materials than brittle materials?

30 / 50

30. Which property makes steel cables suitable for lifting heavy loads in cranes?

31 / 50

31. Which of the following is a common cause of fracture in ceramics?

32 / 50

32. Which point on a stress–strain curve indicates the beginning of plastic deformation?

33 / 50

33. How does knowledge of mechanical properties help in sports equipment design?

34 / 50

34. Why is elasticity important in the design of artificial heart valves?

35 / 50

35. Which of the following is the best everyday example of elasticity?

36 / 50

36. When a block is subjected to equal and opposite tangential forces on its opposite faces, which type of stress develops?

37 / 50

37. Which one of the following is true about UTS and breaking stress?

38 / 50

38. Why is elasticity important in the process of forging?

39 / 50

39. What is the definition of proportionality limit?

40 / 50

40. If a wire of length and cross-sectional area is subjected to a tensile force , the elongation is given by:

41 / 50

41. A wire of length and area is subjected to a tensile force of . If its elongation is , what is the Young’s modulus of the material?

42 / 50

42. Which of the following best describes fatigue failure?

43 / 50

43. A wire of length and diameter is stretched under a load of . If the lateral strain is and longitudinal strain is , calculate Poisson’s ratio.

44 / 50

44. How does increasing temperature generally affect plastic deformation in metals?

45 / 50

45. A steel rod elongates by under a stress of . If , what is its length?

46 / 50

46. Why is hot rolling of steel easier than cold rolling?

47 / 50

47. A steel wire of length and radius is fixed at one end. A load of is applied at the free end. If the elongation is , calculate Young’s modulus.

48 / 50

48. The length of a rod increases by when subjected to tensile stress of . If Young’s modulus = , find original length of rod.

49 / 50

49. Why is fracture mechanics applied in the design of bridges?

50 / 50

50. What happens to the stress–strain curve after UTS is reached?

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Practice Mechanical Properties of Solids MCQs
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Class 11 Physics — Chapter 9: Mechanical Properties of Solids Online Test

The Mechanical Properties of Solids Online Test helps Class 11 students understand how different materials behave under the action of forces. This chapter is not just theoretical — it connects Physics to the real world through concepts like stress, strain, elasticity, Young’s modulus, and Hooke’s law. Many students find this topic tricky at first, but once they start solving practical-based questions, it becomes one of the most scoring chapters in Physics.

These online tests are based on the NCERT Class 11 Physics Chapter 9 — Mechanical Properties of Solids and follow the latest CBSE pattern. Each test gives you an exam-like experience with multiple-choice questions, a timer, and instant results. You can attempt them anytime, anywhere, and track your progress with each paper.

By regularly attempting this Mechanical Properties of Solids Online Test, you’ll strengthen your understanding of elasticity and material behavior. Each question is selected carefully to test your clarity on formulas, graphs, and applications. Students who practice these papers consistently gain confidence and perform better in school exams, JEE, and NEET.

About this Online Test

The Chapter 9 Online Test is divided into three timed papers that gradually increase in level. You can start with basics, move to mixed difficulty, and finally challenge yourself with advanced-level problems.

  • Paper 1 — Fundamentals: 20 questions · 30 min · Pass ≥ 40%
  • Paper 2 — Concept Practice: 30 questions · 45 min · Pass ≥ 50% · Random questions each attempt
  • Paper 3 — Advanced Test: 50 questions · 75 min · Pass ≥ 70% · Certificate on passing

All papers are auto-graded and include a detailed answer review. Papers 2 and 3 offer new sets of questions every time you attempt, making your learning continuous and engaging.

Key Topics Covered (Mechanical Properties of Solids)

  • Elasticity and plasticity
  • Stress and strain — longitudinal, shear, and volumetric
  • Hooke’s law and stress–strain curve
  • Elastic moduli: Young’s modulus, bulk modulus, rigidity modulus
  • Poisson’s ratio and its significance
  • Elastic potential energy in a stretched wire
  • Applications of elasticity in daily life and industries

Why You Should Take This Test

Understanding mechanical properties through reading is not enough. You need to practice to remember formulas and learn when to apply them. This online test helps you:

  • Master formula-based and concept-based problems
  • Revise all important elasticity and stress-strain questions
  • Improve accuracy with time-based challenges
  • Get instant feedback and result analysis
  • Build confidence for board and competitive exams

Who Should Attempt

  • Class 11 CBSE/NCERT students revising Chapter 9
  • JEE/NEET aspirants focusing on mechanics-based questions
  • Students who find elasticity and modulus numericals confusing
  • Teachers looking for ready-to-use online chapter tests

Preparation Tips for Chapter 9

  • Memorize all elasticity formulas like Y = Stress / Strain, K = Volume Stress / Volume Strain, etc.
  • Understand the shape of the stress-strain graph and its regions.
  • Study the difference between elastic and plastic behavior of materials.
  • Attempt Paper 1 after reading NCERT; attempt Paper 2 & 3 for deeper understanding.
  • Revisit incorrect answers and revise related concepts from your notes.

Before You Start

  • Do not refresh or close the tab while taking the test.
  • Use Chrome or Edge browser for smooth performance.
  • Ensure a stable internet connection during the test.

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