Building Materials problems
- 1. Lime concrete is generally used for
Options- A. wall foundations
- B. flooring at ground level
- C. both (a) and (b)
- D. neither (a) nor (b). Discuss
Correct Answer: flooring at ground level
- 2. Stones used for ornamental work must be
Options- A. soft
- B. hard
- C. light
- D. heavy. Discuss
Correct Answer: soft
- 3. Portland pozzolana cement possesses
Options- A. higher resistance to chemical attack
- B. lower heat of hydration
- C. lower shrinkage on drying
- D. water tightness
- E. all the above. Discuss
Correct Answer: all the above.
- 4. In paints, the pigment is responsible for
Options- A. durability
- B. colour
- C. smoothness
- D. glassy face
- E. none of these. Discuss
Correct Answer: colour
- 5. Iron ore may contain
Options- A. carbon
- B. silicon
- C. sulphur
- D. phosphorus and maganese
- E. all the above. Discuss
Correct Answer: all the above.
- 6. Formula for quick lime, is
Options- A. CaCO3
- B. CaO
- C. CO3CO2
- D. none to these. Discuss
Correct Answer: CaO
- 7. Duco is one of the patent forms of
Options- A. emulsion paints
- B. plastic paints
- C. bituminous paints
- D. aluminium paints
- E. cellulose paints. Discuss
Correct Answer: cellulose paints.
- 8. Pick up the correct statement from the following:
Options- A. Plastics have generally low melting point
- B. The coefficient of thermal expansion of plastics is about three times than that of steel
- C. The acoustical boards prepared by impregnating fibre-glass with phenolic resins has absorption coefficient of about 0.67
- D. All the above. Discuss
Correct Answer: All the above.
- 9. The operation of removal of impurities or clay adhering to iron ores, is known as
Options- A. dressing
- B. calcination
- C. roasting
- D. smelting. Discuss
Correct Answer: dressing
- 10. The weight of 1 m3 of brick earth, is about
Options- A. 1200 kg
- B. 1500 kg
- C. 1800 kg
- D. 2000 kg. Discuss
Correct Answer: 1800 kg
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