1.The thermal conductivity of a single-crystal ceramic specimen is slightly greater than a polycrystalline one of the same material. Why is this so?
2.The thermal conductivity of a plain carbon steel is greater than for a stainless steel. Why is this so?
3.Thick ceramic wares are more likely to crack upon drying than thin wares. Why is this so?
4.Explain why a clay, once having been fired at an elevated temperature, loses its hydroplasticity