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Question
Consider the following statements regarding Copper metal:
1. It was the first metal manipulated by humans and it remains an important metal in the industry today.
2. Good electrical conductivity, malleability, and ductility are the properties of copper.
Which among the statement/s given above is/are correct?
1. It was the first metal manipulated by humans and it remains an important metal in the industry today.
2. Good electrical conductivity, malleability, and ductility are the properties of copper.
Which among the statement/s given above is/are correct?
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Solution
The correct option is C Both 1 and 2
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Copper is one of the few metals that can occur in the nature in a directly usable metallic form (native metals). This led to very early human use in several regions, from 8000 BC. Thousands of years later, it was the first metal to be smelted from sulfide ores, around 5000 BC; the first metal to be cast into a shape in a mold, around 4000 BC; and the first metal to be purposely alloyed with another metal, tin, to create bronze, around 3500 BC.
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Copper is one of the few metals that can occur in the nature in a directly usable metallic form (native metals). This led to very early human use in several regions, from 8000 BC. Thousands of years later, it was the first metal to be smelted from sulfide ores, around 5000 BC; the first metal to be cast into a shape in a mold, around 4000 BC; and the first metal to be purposely alloyed with another metal, tin, to create bronze, around 3500 BC.
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