Building Materials problems
- 1. Stainless steel resists corrosion due to
Options- A. carbon
- B. sulphur
- C. vanadium
- D. chromium
- E. maganese. Discuss
Correct Answer: chromium
- 2. Mastic asphalt is
Options- A. water proof
- B. fire proof
- C. elastic
- D. all the above. Discuss
Correct Answer: all the above.
- 3. For sanitary pipes and chemical stonewares,
Options- A. salt glazing is used
- B. lead glazing is used
- C. opaque glazing is used
- D. None of these. Discuss
Correct Answer: salt glazing is used
- 4. The pigment used in paints for corrosive resistance, is
Options- A. white lead
- B. ferrous oxide
- C. zinc white
- D. red lead
- E. gypsum. Discuss
Correct Answer: red lead
- 5. Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following:
Options- A. Alumina
- B. Lime
- C. Ironoxide
- D. Magnesia. Discuss
Correct Answer: Alumina
- 6. Non acid-resistant asbestos is :
Options- A. tremolite asbestos
- B. chrysolite abestos
- C. amosite absestos
- D. none of these. Discuss
Correct Answer: chrysolite abestos
- 7. Refractory bricks resist
Options- A. high temperature
- B. chemical action
- C. dampness
- D. all the above. Discuss
Correct Answer: high temperature
- 8. Good quality sand is never obtained from
Options- A. river
- B. nala
- C. sea
- D. gravel powder. Discuss
Correct Answer: sea
- 9. For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is
Options- A. 80 : 13 : 7
- B. 70 : 20 : 10
- C. 60 : 35 : 5
- D. none of these. Discuss
Correct Answer: 80 : 13 : 7
- 10. The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called
Options- A. Plutonic rocks
- B. Hypabyssal rocks
- C. Volcanic rocks
- D. Ignoeous rocks. Discuss
Correct Answer: Hypabyssal rocks
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