Answer: It should clean , sharp and rectangular grains . It should be free from dust and other clay particles , should not stick to fingers when rubbing , free from mica , soft fibrous substances . It should pass through a sieve of 400 mesh.
Answer: It should clean , sharp and rectangular grains . It should be free from dust and other clay particles , should not stick to fingers when rubbing , free from mica , soft fibrous substances . It should pass through a sieve of 400 mesh.