Building Materials problems
- 1. Laterite is a/an
Options- A. volcanic rock
- B. argillaceous rock
- C. calcareous rock
- D. silicious rock. Discuss
Correct Answer: argillaceous rock
- 2. For lime concrete,
Options- A. slump is 50 to 75 mm
- B. flexural strength at 90 days is 0.2 N/mm2
- C. compressive strength at 90 days is 1.5 N/mm2
- D. compressive strength at 26 days is 1.2 N/mm2
- E. all the above. Discuss
Correct Answer: all the above.
- 3. The most commonly used synthetic abrasive is
Options- A. aluminium carbide
- B. boric acid
- C. silicon
- D. All of these. Discuss
Correct Answer: All of these.
- 4. Lime mortar is generally made with
Options- A. quick lime
- B. fat lime
- C. hydraulic lime
- D. plain lime
- E. none of these. Discuss
Correct Answer: hydraulic lime
- 5. The commonly used base for iron and steel work, is
Options- A. red lead
- B. zinc white
- C. white lead
- D. titanium white. Discuss
Correct Answer: red lead
- 6. Asbestos
Options- A. is an excellant insulator for heat and electricity
- B. is fire-proof and acid proof
- C. has sp. gravity equal to 3.10
- D. is smooth like glass and silk
- E. All the above. Discuss
Correct Answer: All the above.
- 7. Pick up the correct statement from the following:
Options- A. The percentage of absorption for firebricks varies from 5 to 10
- B. The percentage of silica in silica bricks is to the extent of about 95 to 97 percent
- C. Roughly 1 to 2 percent of lime in silica bricks is added to act as binding material
- D. The compressive strength of silica bricks is about 150 kg/cm2
- E. All the above. Discuss
Correct Answer: All the above.
- 8. Mastic asphalt is
Options- A. acid resisting material
- B. non-corrosive material
- C. corrosive material
- D. heating-resisting material. Discuss
Correct Answer: non-corrosive material
- 9. The PVC doors and windows are preferred as they are
Options- A. rust proof
- B. rot proof
- C. termile proof
- D. water proof
- E. all of these. Discuss
Correct Answer: all of these.
- 10. Glazing of clay products, is done
Options- A. to improve their appearance
- B. to protect them from atmospheric effect
- C. to protect them from corrosive action
- D. all the above. Discuss
Correct Answer: all the above.
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