A sample of naphthalene, which should be pure white, was found to have a grayish color after the usual purification procedure. the melting point was correct, and the melting point range was small. exp

A case of naphthalene, which should be unsullied unblemished, was ground to enjoy a frostyish speciousness succeeding the general disinfection proceeding. the fluid top was redress, and the fluid top order was trivial. illustrate the frosty speciousness.