1.

Plaster of Paris is __________(a) Double hydrate of aluminium sulphate(b) Double hydrate of calcium sulphate(c) Hemihydrate of calcium sulphate(d) Hemihydrate of aluminium sulphateI have been asked this question in a job interview.I'd like to ask this question from Miscellaneous Materials in portion Miscellaneous Materials, Plain and Reinforced Cement Concrete of Construction & Building Materials

Answer»

The correct choice is (c) Hemihydrate of calcium sulphate

The best explanation: PLASTER of Paris is hemihydrate of calcium sulphate. On HEATING finely ground gypsum at a SUITABLE temperature, it LOSES about 14.7% of its water content and forms plaster of Paris.



Discussion

No Comment Found

Related InterviewSolutions