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