Question: 31- Although metals form basic oxides, which of the following metals form an amphoteric oxide?
Answer: (c) Al
Question: 32- Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity?
Answer: (b) Graphite
Question: 33 - Electrical wires have a coating of an insulting material. The material, generally used is
Question: 34- Which of the following non-metals is a liquid?
Answer: (b) Bromine
Question: 35 - Which of the following can undergo a chemical reaction?
Answer: (d) CuSO4 + Fe
Question: 36 - Which one of the following figures correctly describes the process of electrolytic refining?
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