Building Materials problems
- 1. Lime putty
Options- A. is made from hydraulic lime
- B. is made by adding lime to water
- C. can be used only upto three days
- D. may be obtained from drying lime water mix passing through IS sieve No. 300
- E. all of above. Discuss
Correct Answer: all of above.
- 2. According to IS 399-1963, the weight of the timber is specified at
Options- A. 8% moisture content
- B. 10% moisture content
- C. 12% moisture content
- D. 14% moisture content. Discuss
Correct Answer: 12% moisture content
- 3. The portion of the brick cut across its width and having its length equal to that of a full brick, is known as
Options- A. closer
- B. queen closer
- C. king closer
- D. prince closer
- E. none of these. Discuss
Correct Answer: queen closer
- 4. The steel used for the manufacture of rails, is
Options- A. Bessemer steel
- B. mild steel
- C. cast steel
- D. stainless steel. Discuss
Correct Answer: Bessemer steel
- 5. Plaster of Paris is obtained by calcining
Options- A. bauxite
- B. gypsum
- C. kankar
- D. lime stone
- E. none of these. Discuss
Correct Answer: gypsum
- 6. Pick up the metal refractory from the following:
Options- A. Molyblendum
- B. Tungsten
- C. Zicronium
- D. All of these. Discuss
Correct Answer: All of these.
- 7. The method of addition polymerization is used for obtaining:
Options- A. polythylene
- B. polypropylene
- C. polyvinylchloride
- D. polystyrene
- E. All of these. Discuss
Correct Answer: All of these.
- 8. Asphalt is obtained from
Options- A. petroleum distillation
- B. bitumen distillation
- C. plastic distillation
- D. none of these. Discuss
Correct Answer: petroleum distillation
- 9. According to ISI, bitumen is classified into
Options- A. 2 grades
- B. 4 grades
- C. 6 grades
- D. 8 grades.
- E. 10 grades. Discuss
Correct Answer: 10 grades.
- 10. Pick up the correct statement from the following:
Options- A. The lime in excess makes the cement unsound and causes the cement to expand and disintegrate
- B. The silica in excess makes the cement stronger but its setting time also increases
- C. The excess amount of alumina weakens the cement
- D. The addition of gypsum increases the initial setting time of cement
- E. All the above. Discuss
Correct Answer: All the above.
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