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- Question
Inhaling of fly-ash over a long period causes
Options- A. silicosis
- B. fibrosis of lungs
- C. bronchitis
- D. pneumonitis
- E. All of these.
- Correct Answer
- All of these.
- 1. Resins are
Options- A. not soluble in water
- B. soluble in spirit
- C. used in varnishes
- D. left behind on evaporation of oil
- E. all the above. Discuss
- 2. The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:
Options- A. 15, 75, 10
- B. 75, 10, 15
- C. 10, 15, 75
- D. 10, 75, 15. Discuss
- 3. The standard size of masonry bricks, is
Options- A. 18 cm x 8 cm x 8 cm
- B. 19 cm x 9 cm x 9 cm
- C. 20 cm x 10 cm x 10 cm
- D. 21 cm x 11 cm x 11 cm
- E. none of these. Discuss
- 4. Chemically, marble is known as
Options- A. metamorphic rock
- B. argillaceous rock
- C. calcareous rock
- D. silicious rock. Discuss
- 5. Pick up the correct statement from the following: Method of sawing timber
Options- A. tangentially to annual rings, is known as tangential method.
- B. in four quarters such that each board cuts annual rings at angles not less than 45°, is known as quarter sawing method.
- C. cut out of quarter logs, parallel to the medullary rays and perpendicular to annual rings, is known as radial sawing.
- D. all the above. Discuss
- 6. The slag which floats on the surface of the molten iron generally contains
Options- A. Lime (CaO) 45%
- B. Silica (SiO2) 35%
- C. Alumina (Al2O3) 12%
- D. MgO, CaSO4, KMnO2 and FeO 8%
- E. all the above. Discuss
- 7. The commonly used lime in white washing, is
Options- A. white lime
- B. fat lime
- C. hydraulic lime
- D. lime
- E. quick lime. Discuss
- 8. Pick up the correct statement from the following:
Options- A. Alexander Parkes, a Scottish chemist prepared a hard material by mixing camphor and alcohol with nitro cellulose and called it, as Parkesite
- B. Dr. L. Bakeland, a Belgian scientist prepared a product known as Bakelite
- C. Pollark, an Austrian scientist prepared a substance from urea and formaldehyde and called it Plastic
- D. All the above. Discuss
- 9. A badly mixed cement concrete results in
Options- A. segregation
- B. bleeding
- C. honey combing
- D. none to these. Discuss
- 10. Minimum of 40% of iron, is available in
Options- A. Magnetite
- B. Red haemetite
- C. Limonite
- D. Siderite
- E. Black band. Discuss
Building Materials problems
Search Results
Correct Answer: used in varnishes
Correct Answer: 15, 75, 10
Correct Answer: 19 cm x 9 cm x 9 cm
Correct Answer: calcareous rock
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: fat lime
Correct Answer: All the above.
Correct Answer: honey combing
Correct Answer: Black band.
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