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- Question
Calcination of iron ores is done
Options- A. to remove moisture
- B. to remove carbonic acid
- C. by roasting in heaps
- D. after dressing
- E. all the above.
- Correct Answer
- all the above.
- 1. Cement paints usually
Options- A. contain hydrated lime
- B. contain 5% to 10% colour pigments
- C. are prepared with white cement
- D. contain 5% sodium chloride
- E. all the above. Discuss
- 2. Pick up the correct statement from the following:
Options- A. Slaked lime contains calcium hydroxide
- B. Quick lime contains calcium oxide
- C. Slaked lime may be obtained from quick lime
- D. Slaked lime is obtained by adding water to quick lime
- E. All the above. Discuss
- 3. Softer variety of steel may be obtained by
Options- A. Cementation process
- B. crucible process
- C. Bessemer process
- D. Open hearth process. Discuss
- 4. Age of a tree may be ascertained by
Options- A. radius of its stem
- B. circumference of its stem
- C. number of branches
- D. number of annual rings. Discuss
- 5. For one cubic metre of brick masonry, number of bricks required, is
Options- A. 400
- B. 425
- C. 450
- D. 500
- E. 550. Discuss
- 6. PVC stands for
Options- A. plastic very compact
- B. polythene vinyl chloride
- C. polythene vinyl carbon
- D. polythene vanadium carbide. Discuss
- 7. Pig iron is manufactured from the ores by
Options- A. dressing
- B. calcination and roasting
- C. smelting
- D. all the above. Discuss
- 8. Invar contains
Options- A. 12% of nickel
- B. 24% of nickel
- C. 30% to nickel
- D. 36% of nickel. Discuss
- 9. The percentage of water for normal consistency, is
Options- A. 5% to 15%
- B. 10% to 25%
- C. 15% to 25%
- D. 20% to 30%
- E. 25% to 35%. Discuss
- 10. The initial setting time of hydraulic lime, is
Options- A. 30 minutes
- B. 60 minutes
- C. 90 minutes
- D. 120 minutes
- E. 150 minutes. Discuss
Building Materials problems
Search Results
Correct Answer: all the above.
Correct Answer: All the above.
Correct Answer: Bessemer process
Correct Answer: number of annual rings.
Correct Answer: 500
Correct Answer: polythene vinyl chloride
Correct Answer: all the above.
Correct Answer: 36% of nickel.
Correct Answer: 15% to 25%
Correct Answer: 120 minutes
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