A. Urea B. Uric acid C. Ammonia D. Urine
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A. Smelting B. Calcination C. Liquation D. Roasting
A. Prostomium B. Peristomium C. Clitellum D. Tail
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A. Its high density B. Its high polishing C. Its chemical inertness D. Presence of free electrons
A. Silver B. Copper C. Iron D. Sodium
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A. Siderite B. Haematite C. Pyrites D. Bauxite
A. Pb B. Ag C. Cr D. None of these
A. Slag B. Flux C. Gangue D. Ore
A. Calcined dolomite B. Limestone C. Haematite D. Silica