Thursday, September 26, 2013

Quiz 04

 Bars of X were exhibited at the Exposition Universelle of 1855,and Napoleon III's most important guests were given X cutlery, while those less worthy dined with mere silver.In 1884, the pyramidal capstone of the Washington Monument was cast of 100 ounces of pure X.

Identify the precious metal X.

The answer is aluminum.
Aluminium was once the costliest metal since the technology to extract it from its ores were not available at that time.