Building Materials problems
- 1. The plastics prepared from Vinyl resin are
Options- A. odourless
- B. non-toxic
- C. transparent
- D. colourless
- E. all of these. Discuss
Correct Answer: all of these.
- 2. Asbestos
Options- A. is a natural fibrous mineral substance
- B. is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3)
- C. contains iron oxide and alumina
- D. all the above. Discuss
Correct Answer: all the above.
- 3. Refractory bricks are
Options- A. neutral refractory bricks
- B. acid refractory bricks
- C. basic refractory bricks
- D. all the above. Discuss
Correct Answer: all the above.
- 4. Slump test for concrete is carried out, to determine
Options- A. strength
- B. durability
- C. workability
- D. water content. Discuss
Correct Answer: workability
- 5. Bullet proof glass is made of thick glass sheet sandwiched by a layer of
Options- A. steel
- B. stainless steel
- C. high test plastic
- D. chromium plate. Discuss
Correct Answer: high test plastic
- 6. For high grade instruments the steel preferred to, is
Options- A. cast steel
- B. bessemer steel
- C. mild steel
- D. whitworth compressed steel. Discuss
Correct Answer: cast steel
- 7. Magnese steels
Options- A. are non-magnetic
- B. possess high electrical resistance
- C. possess low coefficient of expansion
- D. are used for the manufacture of rails
- E. all the above. Discuss
Correct Answer: all the above.
- 8. The term frog means
Options- A. an apparatus to lift the stone
- B. a depression on a face of brick
- C. vertical joint in a brick work
- D. soaking brick in water. Discuss
Correct Answer: a depression on a face of brick
- 9. The coefficient of hardness of stones used in road work should be greater than
Options- A. 10
- B. 12
- C. 15
- D. 17. Discuss
Correct Answer: 17.
- 10. Bitumen felt is used for
Options- A. water proofing
- B. damp proofing
- C. both (a) and (b)
- D. neither (a) nor (b). Discuss
Correct Answer: both (a) and (b)
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