SSC JE Exam - building materials physical chemical properties classification One Line Questions & Answers

1. Which chemical property of cement is primarily responsible for its hardening and strength development? — Hydration

2. The chemical property of a material that indicates its ability to react with acids or bases is known as: — Chemical resistance

3. Materials like wood, stone, and metals are primarily classified as: — Natural materials

4. Which of the following is a 'natural' building material? — Timber

5. Aggregates are primarily classified into fine and coarse based on their: — Particle size

6. Which chemical property is important for materials used in fire-resistant construction? — Incombustibility

7. Which physical property is important for a material used in roofing to resist weathering and degradation from sunlight? — UV resistance

8. What term describes the reduction in strength of a material due to repeated cycles of stress? — Fatigue

9. Which property of a building material relates to its ability to resist deformation under load? — Stiffness

10. The rate at which a material absorbs or desorbs moisture from the atmosphere is related to its: — Hygroscopicity

11. The ratio of the weight of a material to the weight of an equal volume of water at a specified temperature is known as: — Specific gravity

12. The presence of voids or pores within a material is referred to as its: — Porosity

13. The tendency of a material to break or shatter with little or no plastic deformation is known as: — Brittleness

14. The ability of a material to be hammered or rolled into thin sheets without fracturing is known as: — Malleability

15. The ability of a material to absorb energy and plastically deform without fracturing is known as: — Toughness

16. What term describes the gradual deformation of a material under constant stress over a long period, typically at elevated temperatures? — Creep

17. The property of a material to deform permanently under stress without fracturing is called: — Plasticity

18. The classification of aggregates based on their origin includes: — Natural and Artificial aggregates

19. An 'artificial' building material is one that is: — Processed or manufactured from natural raw materials

20. Which physical property is crucial for determining the thermal insulation capabilities of a building material? — Thermal conductivity

21. The ability of a material to resist fracture when subjected to a sharp impact is termed: — Impact resistance

22. The ability of a material to resist penetration by a sharp object is a measure of its: — Hardness

23. What physical property is critical for a material used in electrical wiring? — Low electrical resistivity

24. Which chemical property of a material indicates its tendency to break down when mixed with water? — Hydrolysis resistance

25. What is meant by the 'soundness' of cement? — Its ability to maintain its shape and volume without harmful expansion after setting

26. What does the term 'Workability' refer to in the context of fresh concrete or mortar? — The ease with which it can be mixed, placed, and compacted

27. Which property of a material describes its ability to be drawn out into a thin wire? — Ductility

28. The density of a building material is defined as its: — Mass per unit volume

29. Materials that are manufactured by combining two or more distinct materials to achieve improved properties are classified as: — Composite materials

30. Which classification of building materials includes items like bricks, cement, and glass? — Artificial materials

31. Building materials can be broadly classified based on their function into categories like: — Structural, Finishing, and Insulation

32. The classification of materials into ferrous and non-ferrous is based on their: — Chemical composition (presence of iron)

33. The classification of building materials into organic and inorganic is based on their: — Chemical structure (presence of carbon)

34. What is the primary chemical reaction that occurs when Portland cement is mixed with water? —

35. The tendency of a material to absorb moisture from the air is termed: — Hygroscopicity

36. Which physical property is crucial for a material used as a sealant to prevent the passage of fluids or gases? — Permeability

37. The chemical property that describes a material's resistance to degradation or decomposition when exposed to light, especially ultraviolet radiation, is: — Photostability

38. A material that returns to its original shape after the removal of applied load exhibits: — Elasticity

39. Which chemical property of a material refers to its tendency to undergo a chemical reaction with its environment, such as oxidation or corrosion? — Reactivity

40. Which chemical property refers to a material's resistance to being corroded or degraded by chemical reactions with its environment? — Chemical resistance

41. The chemical reaction of a material with oxygen, often leading to degradation, is called: — Oxidation

42. The process of hardening of cement in the presence of water is called: — Hydration

43. Which chemical property determines if a material will burn when exposed to heat and oxygen? — Combustibility

44. The property of a material to resist weathering and environmental degradation over time is referred to as: — Durability

45. The classification of building materials into natural and artificial categories is based on: — Their origin and processing

46. Which physical property of a material is related to its ability to absorb and store heat energy? — Specific heat capacity

47. Which physical property of a material is related to its ability to transmit heat? — Thermal conductivity

48. The process by which a material undergoes a permanent change in volume due to temperature changes is called: — Thermal expansion

49. The ability of a material to withstand scratching, cutting, or wearing away is known as: — Hardness

50. What is the term for the measure of a material's resistance to deformation under shear stress? — Shear Modulus

building materials physical chemical properties classification - One Line Questions