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Chemistry of Ores and Metals


13. 

Which of the following statements about the physical properties of metal is NOT correct?

Answer : C. gold and silver are not malleable

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14. 

which among the following is heaviest metal

Answer : A. Mercury

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15. 

Which is the lightest metal in the periodic table

Answer : B. Lithium

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16. 

German silver is the combination of

Answer : B. Copper, Zinc and Nickel

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17. 

The percentage of gold in 22 carat is

Answer : B. 91.60%

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18. 

Why is tungsten used in electric bulbs?

Answer : C. It has high melting point

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