Building Materials problems
- 1. Kaolin is chemically classified as
Options- A. metamorphic rock
- B. argillaceous rock
- C. calcareous rock
- D. silicious rock. Discuss
Correct Answer: argillaceous rock
- 2. Initial setting time of cement for asbestos cement products should be not less than
Options- A. 30 minutes
- B. 50 minutes
- C. 75 minutes
- D. 90 minutes. Discuss
Correct Answer: 90 minutes.
- 3. The rocks which are formed due to cooling of magma at a considerable depth from earth's surface are called
Options- A. Plutonic rocks
- B. Hypabyssal rocks
- C. Volcanic rocks
- D. Igneous rocks. Discuss
Correct Answer: Plutonic rocks
- 4. For the manufacture of Portland cement, the proportions of raw materials used, are
Options- A. lime 63% ; silica 22% ; other ingredients 15%
- B. lime 22% ; silica 63% ; other ingredients 15%
- C. silica 40% ; lime 40% ; other ingredients 20%
- D. silica 70% ; lime 20% ; other ingredients 10%. Discuss
Correct Answer: lime 63% ; silica 22% ; other ingredients 15%
- 5. Ultimate strength to cement is provided by
Options- A. Tricalcium silicate
- B. Di-calcium silicate
- C. Tri-calcium aluminate
- D. Tetra calcium alumino ferrite. Discuss
Correct Answer: Di-calcium silicate
- 6. Which one of the following is acid resistant asbestos:
Options- A. actinolite asbestos
- B. amosite asbestos
- C. anthophylite asbestos
- D. crocidolite asbestos
- E. All the above. Discuss
Correct Answer: All the above.
- 7. Sewer pipes are made of
Options- A. earthen ware
- B. stone ware
- C. refractory clay
- D. terracota
- E. all the above. Discuss
Correct Answer: stone ware
- 8. Varnish is a transparent or semi-transparent solution of resinuous substances in
Options- A. alcohol
- B. linseed
- C. turpentine
- D. all the above. Discuss
Correct Answer: all the above.
- 9. The plastics made from cellulose resin
Options- A. are as clear as glass
- B. are tough and strong
- C. possess excellent electrical properties
- D. All the above. Discuss
Correct Answer: All the above.
- 10. Pick up the correct statement from the following:
Options- A. For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
- B. For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55
- C. For thin structures which remain continuously under water, the water-cement ratio by weight should be 0.55
- D. For massive concrete structures which remain continuously under water, the water cement ratio by weight should be 0.65
- E. All the above. Discuss
Correct Answer: All the above.
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