Q. A good brick earth should contain (Solved)
1. about 20% to 30% of alumina
2. about 50% to 60% of silica
3. not more than 5% of lime
4. All the above.
- d. All the above.
1. about 20% to 30% of alumina
2. about 50% to 60% of silica
3. not more than 5% of lime
4. All the above.