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Q.

Which of the following is not a metal?


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a

Copper

b

Sulphur

c

Aluminium

d

Iron  

answer is B.

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Detailed Solution

Sulphur is not a metal.
Sulphur (Na) is not a metal, although copper (Cu), aluminium (Al), and iron (Fe) are metals. Since it possesses the three physical characteristics stated for non-metals, sulphur is classified as a non-metal. First, its electrons are not free to flow and are a bad conductor of heat and electricity. Second, due to its ease of gaining electrons, it possesses a relatively high electronegativity. Third, sulphur is used for vulcanizing black rubber as a fungicide ingredient in black gunpowder. Sulfuric acid (H2SO4), one of the most significant elements utilized as an industrial raw material, is the main derivative of sulphur.
 
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