Purity of a solid substance can be checked by its:
(A) boiling point (B) melting point (C) solubility of water (D) iron
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Answer (B)
Melting Point can be used as a reference for checking the purity of any solid substance.
Eg. Cast Iron & steel ( both we can made by adding a carbon content in iron ) but cast iron is having low melting point compare to steel.
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