BPSC – Combined Competitive Examination · प्रश्न 93
Corundum and cryolite are important ores of:
उत्तर दाखवा आणि स्पष्टीकरण
उत्तर: (A) Aluminium
स्पष्टीकरण
Both are aluminium minerals; cryolite is used as a flux in aluminium extraction.
- (A) बरोबर
Correct: corundum (Al₂O₃) and cryolite (Na₃AlF₆) contain aluminium.
- (B) चूक
Wrong: silver ores include argentite.
- (C) चूक
Wrong: tin ore is cassiterite.
- (D) चूक
Wrong: iron ores are haematite, magnetite etc.