Building Materials problems
- 1. The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is
Options- A. 20
- B. 15
- C. 10
- D. 5
- E. 0. Discuss
Correct Answer: 0.
- 2. Seasoning of timber is done for
Options- A. increasing moisture content
- B. decreasing moisture content
- C. increasing strength of timber
- D. none to these. Discuss
Correct Answer: decreasing moisture content
- 3. Pig iron obtained from the furnance which is properly provided with fuel at a very high temperature, is called
Options- A. Bessemer pig
- B. Grey or foundry pig
- C. White or forge pig
- D. Mottled pig
- E. None of the above. Discuss
Correct Answer: Grey or foundry pig
- 4. Durability of building stone is affected by its
Options- A. chemical composition
- B. texture
- C. resistance to atmosphere
- D. location in structure
- E. all the above. Discuss
Correct Answer: all the above.
- 5. Basalt is
Options- A. sedimentary rock
- B. metamorphic rock
- C. extrusive igneous rock
- D. intrusive igneous rock. Discuss
Correct Answer: extrusive igneous rock
- 6. For a 50 kg cement bag water required, is
Options- A. 16.5 litres
- B. 18.5 litres
- C. 20.5 litres
- D. 22.5 litres
- E. 25 litres. Discuss
Correct Answer: 22.5 litres
- 7. Stones used for rubble masonry must be
Options- A. soft
- B. hard
- C. light
- D. heavy. Discuss
Correct Answer: hard
- 8. Red short iron cracks when bent due to the presence of
Options- A. sulphur
- B. carbon
- C. phosphorus
- D. silicon. Discuss
Correct Answer: sulphur
- 9. For construction of structures under water, the type of lime used, is
Options- A. hydraulic lime
- B. fat lime
- C. quick lime
- D. pure lime
- E. none of these. Discuss
Correct Answer: hydraulic lime
- 10. Second class bricks
Options- A. are of dark brown colour
- B. produce a metallic sound when struck
- C. are well burnt
- D. are under burnt. Discuss
Correct Answer: produce a metallic sound when struck
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