Stones MCQ – Building Materials

21. Granite contains primarily

  1. Quartz and felspar
  2. Quartz
  3. Quartz and mica
  4. Mica
Answer
Answer. a

22. The pressure acting on the stones in stone masonry construction should be

  1. along the direction of bedding planes
  2. at 60° to the direction of bedding planes
  3. at 45° to the direction of bedding planes
  4. perpendicular to the direction of bedding planes
Answer
Answer. d

23. Which of the following is used for decorative work in buildings?

  1. Granite
  2. Basalt
  3. Slate
  4. Diamond
Answer
Answer. a

24. A heavy stone is suitable for the construction of

  1. Rubble masonry
  2. Arches
  3. Retaining walls
  4. Roads
Answer
Answer. c

25. Most of the stones possess the specific gravity in the range of

  1. 1.5 to 2.0
  2. 1 to 1.5
  3. 3 to 4
  4. 2.4 to 2.8
Answer
Answer. d

26. The stone whose crushing strength is maximum, is

  1. granite
  2. chalk
  3. slate
  4. marble
Answer
Answer. a

27. Which of the following has more fire resisting characteristics?

  1. Marble
  2. Lime stone
  3. Compacted sandstone
  4. Granite
Answer
Answer. c

28. Laterite is used in

  1. carving and ornamental works
  2. fire resistance works
  3. electrical switch boards
  4. heavy engineering works
Answer
Answer. a

29. Spalling hammer is used for

  1. driving wooden headed chiesel
  2. carving of stones
  3. rough dressing of stones
  4. breaking small projection of stones
Answer
Answer. c

30. In case of building stones, the test that is used to find the presence of soluble organic matter inside the stone is

  1. Brard’s test
  2. Acid test
  3. Crystallization test
  4. Smith test
Answer
Answer. d

31. A simple field test carried out to determine deterioration of stones when immersed in water is known as

  1. Absorption test
  2. Moh’s hardness test
  3. Toughness test
  4. Smith’s test
Answer
Answer. d

32. The rate of loading applied in crushing strength test is

  1. 10 tonne/minute
  2. 40 tonne/minute
  3. 20 tonne/minute
  4. 400 tonne/minute
Answer
Answer. b

33. Hardness of the stones can be tested by ________ in the laboratory.

  1. Impact strength
  2. Abrasion strength
  3. Moh’s scale
  4. Crushing strength
Answer
Answer. c

34. Moh’s scale is used for stones to determine

  1. Durability
  2. Flakiness index
  3. Hardness
  4. Strength
Answer
Answer. c

35. The maximum allowable Los Angeles abrasion value for high quality surface course is

  1. 50%
  2. 30%
  3. 80%
  4. 25%
Answer
Answer. b

36. A good building stone should not absorb water more than

  1. 5%
  2. 10%
  3. 15%
  4. 25%
Answer
Answer. a

37. Impact value of stone for road work specified is

  1. wearing coat-30%
  2. bituminous macadam-35%
  3. water-bound macadam-40%
  4. all of the above
Answer
Answer. d

38. Which of the following test is used to determine the rate of wear of stones?

  1. Abrasion test
  2. Crushing test
  3. Attrition test
  4. Impact test
Answer
Answer. c

39. Thumb-nail and knife scratching test is to determine

  1. Hardness of stone
  2. Toughness of stone
  3. Strength of concrete
  4. Durability of concrete
Answer
Answer. a

40. What is determined by conducting an abrasion test?

  1. aggregate crushing value
  2. toughness
  3. hardness
  4. soundness
Answer
Answer. c
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