1. Name the English mason, who discovered cement in 1824?
2. What was the name initially given to cement ?
3. What are the main components of cement?
4. Which are the important raw materials required for cement manufacturing ?
5. Which raw material reduces the setting time of cement?
6. When water is mixed with cement and left as such for sometime, it becomes a hard mass. This is known as ___
7. Why cement structures are cooling upto 7 days by sprinkling water?
8. What is the name of the mixture of cement, sand and water, used for plastering walls and binding bricks & stones?
9. Which mixture of cement, sand, gravel or small pieces of stone and water is used for construction of floors?
10. The structure having iron rods embedded in wet concrete is known as ___
11. What is the supercooled liquid of silicates?
12. What are the common raw materials used for the formation of glass?
13. What is the other name of the ordinary glass?
14. What is the name of the finely powdered mixture of raw materials for glass production?
15. At what temperature is the raw materials fused to get the molten glass?
16. The process of slow and uniform cooling of molten glass is known as ___
17. If the molten glass is cooled very slowly, it becomes ____
18. Which metallic oxide gives red color to glass?
19. Ferrous oxide gives ___ color to glass
20. Which metallic oxide is added to glass to get blue color ?
| More General Science Questions |
0 Comments