Building Materials problems
- 1. The material generally not used as extender in paints, is
Options- A. powdered silica
- B. gypsum
- C. talc
- D. zinc white. Discuss
Correct Answer: zinc white.
- 2. The sequence of refractory materials according to increasing melting points is :
Options- A. Dolomite, Magnesia, Bauxite, Chromite
- B. Bauxite, Chromite, Dolomite, Magnesia
- C. Magnesia, Bauxite, Dolomite, Chromite. Discuss
Correct Answer: Bauxite, Chromite, Dolomite, Magnesia
- 3. Pick up the correct statement from the following:
Options- A. Bull's trench kiln a trench excavated in ground
- B. Hoffman's kiln is constructed overground
- C. Tunnel Kiln is constructed as a tunnel
- D. All the above. Discuss
Correct Answer: All the above.
- 4. Veneering means
Options- A. carving out designs on timber planks
- B. chemically treating timber planks
- C. thick layer of superior wood glued to inferior wood
- D. thin layer of superior wood glued to inferior wood. Discuss
Correct Answer: thick layer of superior wood glued to inferior wood
- 5. Pig iron made from heamatite ores free from sulphur, phosphorus and copper, is known as
Options- A. Bessemer pig
- B. Grey or foundry pig
- C. White or forge pig
- D. Mottled pig
- E. All the above. Discuss
Correct Answer: Bessemer pig
- 6. Pick up the non-inflammable plastic from the following:
Options- A. Cellulose acetate plastics
- B. Polyvinyl chloride plastics
- C. Phenol formaldehyde plastic
- D. Urea formaldehyde plastic. Discuss
Correct Answer: Polyvinyl chloride plastics
- 7. Which one of the following is used for preparing porcelain
Options- A. clay
- B. feldspar
- C. quartz
- D. minerals
- E. All of these. Discuss
Correct Answer: All of these.
- 8. The most valuable timber may be obtained from
Options- A. chir
- B. shisham
- C. sal
- D. teak. Discuss
Correct Answer: teak.
- 9. Bitumen completely dissolves in
Options- A. carbon bisulphide
- B. chloroform
- C. benzol
- D. coaltar
- E. All of these. Discuss
Correct Answer: All of these.
- 10. Pick up the correct statement from the following:
Options- A. Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon
- B. The edges of a finished wrought iron, are rough due to red shortage
- C. Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4)
- D. For the manufacture of wrought iron, non-sulphurous fuel is not necessary
- E. All the above. Discuss
Correct Answer: All the above.
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