Building Materials problems
- 1. Acrylic is the name of
Options- A. cellulose resin
- B. alkyd resin
- C. methyl metha crylate
- D. cumarone-indene. Discuss
Correct Answer: methyl metha crylate
- 2. Pick up the correct statement from the following:
Options- A. Rusting is caused due to combined action of air, moisture and carbon dioxide
- B. During rusting, first ferrous bicarbonates are formed
- C. On further oxidation ferrous bicarbonates get converted to ferric bicarbonates
- D. Ultimately hydrated ferric oxide is formed during rusting and carbon dioxide gets liberated
- E. All the above. Discuss
Correct Answer: All the above.
- 3. Plastic asphalt is
Options- A. used as a water proofing layer over roof
- B. a mixture of cement and asphalt
- C. a natural asphalt
- D. a refinery product. Discuss
Correct Answer: a mixture of cement and asphalt
- 4. Cast iron contains carbon approximately
Options- A. 1.5% to 5.5%
- B. 0.05% to 1.75%
- C. 0.250%
- D. none to these. Discuss
Correct Answer: 1.5% to 5.5%
- 5. Lacquer is
Options- A. oil paint
- B. distemper
- C. spirit varnish
- D. none to these. Discuss
Correct Answer: spirit varnish
- 6. Whitworth compressed steel is obtained when molten steel is subjected to a pressure of
Options- A. 5 kg/mm2
- B. 9 kg/mm2
- C. 13 kg/mm2
- D. 15 kg/mm2
- E. 10 kg/mm2. Discuss
Correct Answer: 9 kg/mm2
- 7. The tendency of a stone is, to split along:
Options- A. texture
- B. fracture
- C. cleavage
- D. structure
- E. all the above. Discuss
Correct Answer: cleavage
- 8. Based on its dry weight, a freshly felled tree may contain water
Options- A. 25%
- B. 50%
- C. 75%
- D. 100%. Discuss
Correct Answer: 100%.
- 9. Good quality cement contains higher percentage of
Options- A. Tricalcium silicate
- B. Di-calcium silicate
- C. Tri-calcium aluminate
- D. Tetra calcium alumino ferrite
- E. all the above. Discuss
Correct Answer: Tricalcium silicate
- 10. The softest rock is
Options- A. marble
- B. diamond
- C. talc
- D. quartz. Discuss
Correct Answer: talc
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