Cement Interview question & Answer || Job Interview Question || shree cement, Dalmia Cement- 2023
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- Опубліковано 14 лип 2023
- 1. Who is the father of Cement?
Ans- Joseph Aspdin
2. What is the importance of the Standard Consistency Test?
Ans- It is used to determine the quantity of water
4. Hydration of cement is chemical reaction of cement with __________
Ans- water
5. Which of the cement is used in sewage and water treatment plants?
Ans- Sulphate Resisting Cement
6. Which of the cement is used for interior and exterior decorative works?
Ans- Colored Cement
7. What is water-cement ratio?
Ans- Weight of water to the weight of cement
8. Which of the test is used to determine the Standard consistency of cement?
Ans- Vicat apparatus
9. What is the percentage of CLINKER in Portland Cement?
Ans- 2-6%
10. What is the diameter and length of the kiln respectively?
Ans- 6m and 200m
11. What is the composition of making the Mortar?
Ans- Portland Cement + Water + Sand
12. What is wet process?
Ans- Grinding and mixing of the raw materials in their wet state
13. What is the moisture content in slurry for wet process?
Ans- 35-50%
14. In the wet process, the kiln is ___________
Ans- Slightly inclined with vertical
15. In the wet process of cement manufacturing raw material is heated to about _______
Ans- 1300-1450 °C
16. To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between ___
Ans- 1400° and 1500°C
17. Use of gypsum in cement is?
Ans- Gypsum in cement decreases the setting time
18. What is hydration of cement?
Ans- Chemical reaction of cement with water
19. The development of first 28 days strength is on account of the hydration of ____
Ans- C3S
20. Which compound is liberates higher heat & lower heat?
Ans- C3S & C2S
21. Which chemical composition has highest content in OPC?
Ans- Lime
22. Excess in lime causes _______
Ans- The cement to expand and disintegrate
23. Silica in excess causes ________
Ans- The cement to set slowly
24. Which compound gives the colour to the cement?
Ans- Iron Oxide
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% of clinker 2 to 6 % is wrong
Correct answers are as follows
For OPC it is 95 to 97 %
For PPC it is 65 to 70 %
For PSC it is : 50 to 60 %
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