BSEB 12th Chemistry Most Important Objective MCQ Question Chapter Wise 6. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS 1. Which one of the following is not an ore of zinc ? (A) Zinc blende (B) Calamine (C) Zincite (D) Bauxite Answer :- (D) 2. Which of the following metals does not liberate hydrogen gas on reactions […]
