Building Materials problems
- 1. In a mortar, the binding material is
Options- A. cement
- B. sand
- C. surkhi
- D. cinder. Discuss
Correct Answer: cement
- 2. For melting one tonne of cast iron
Options- A. 700 m3 air is required
- B. 20 kg limestone is required
- C. one quintal coke is required
- D. all the above. Discuss
Correct Answer: all the above.
- 3. Wrought iron contains carbon about
Options- A. 1.5% to 5.5%
- B. 0.5% to 1.75%
- C. 0.1% to 0.25%
- D. none to these. Discuss
Correct Answer: 0.1% to 0.25%
- 4. Quartzite is a
Options- A. metamorphic rock
- B. argillaceous rock
- C. calcareous rock
- D. silicious rock. Discuss
Correct Answer: silicious rock.
- 5. Pick up the correct statement from the following:
Options- A. The theory of formation of concrete is based on the phenomena of formation of voids
- B. The bulking of sand is taken into account while volumetric proportioning of the aggregates
- C. The dry sand and the sand completely flooded with water, have practically the same volume
- D. The expansion and contraction joints are provided if concrete structures exceed 12 m in length
- E. All the above. Discuss
Correct Answer: All the above.
- 6. Polymerization helps to improve the property of
Options- A. strength
- B. rigidity
- C. elasticity
- D. all of these. Discuss
Correct Answer: all of these.
- 7. The variety of pig iron used for the manufacture of steel by Bessemer process, is
Options- A. Bessemer pig
- B. Grey pig
- C. White forge pig
- D. Mottled pig. Discuss
Correct Answer: Bessemer pig
- 8. Pick up the polymineralic rock from the following:
Options- A. Quartz sand
- B. Pure gypsum
- C. Magnesite
- D. Granite
- E. None of these. Discuss
Correct Answer: Granite
- 9. Vanadium steel is generally used for
Options- A. railway switches and crossing
- B. bearing balls
- C. magnets
- D. axles and springs. Discuss
Correct Answer: axles and springs.
- 10. The main constituent of fly-ash, is
Options- A. aluminium oxide
- B. silica
- C. ferrous oxide
- D. All of these. Discuss
Correct Answer: All of these.
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