Building Materials problems
- 1. Pick up the correct characteristic of Pyroxene from the following:
Options- A. It forms octagonal crystals
- B. It converts to chlorine by hydration
- C. Its density is 2.3 to 3.6 g/cm2
- D. Its hardness is 5 to 6
- E. All the above. Discuss
Correct Answer: All the above.
- 2. Commonly used thinner in
Options- A. lacquer paints, is alcohol
- B. cellulose paints is ethyle acetate
- C. oil paints, is naptha
- D. distemper, is water
- E. all the above. Discuss
Correct Answer: all the above.
- 3. Pick up the correct statement from the following:
Options- A. The plastic bottles are made by the process of blowing
- B. The plastic sheets are made by the calendering process in which the plastic material is allowed to pass between cylindrical rollers
- C. The application of thermo-setting resins on sheets of paper, is called laminating process
- D. The plastic articles made by placing raw material in the desired moulds, is known as moulding process
- E. All the above. Discuss
Correct Answer: All the above.
- 4. Pick up the correct statement from the following:
Options- A. The average crushing strength of hand moulded bricks is 6000 t/m2
- B. The average tensile strength of hand moulded brick is 200 t/m2
- C. The average shearing strength of hand moulded brick is 600 t/m2
- D. All the above. Discuss
Correct Answer: All the above.
- 5. The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick
Options- A. 20%
- B. 15%
- C. 10%
- D. None of these. Discuss
Correct Answer: 20%
- 6. A well seasoned timber may contain moisture up to
Options- A. 4 to 6%
- B. 6 to 8%
- C. 8 to 10%
- D. 10 to 12%. Discuss
Correct Answer: 10 to 12%.
- 7. Stones used for the construction of retaining walls must be
Options- A. soft
- B. hard
- C. light
- D. heavy. Discuss
Correct Answer: heavy.
- 8. Snowcrete is one of the patent forms of
Options- A. distempers
- B. water proof cement paints
- C. enamel paints
- D. cellulose paints. Discuss
Correct Answer: water proof cement paints
- 9. Slacking of lime is affected by
Options- A. keeping it exposed to air
- B. immersing the lime in water
- C. crushing the lime lumps
- D. none of these. Discuss
Correct Answer: immersing the lime in water
- 10. Cast iron is used for
Options- A. structural works in beams
- B. small sized water pipes
- C. columns and struts
- D. none to these. Discuss
Correct Answer: columns and struts
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