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Various scales and charts have been developed to measure everything from the pungency of peppers to the intensity of earthquakes. Test your knowledge of some of them with these multiple choice questions...
Every element in the period table has a symbol but some are more obvious than others. Can you name these ten elements from their chemical symbols?
The history of aviation is packed full of amazing aircraft, used both commercially and in military operations. How much do you know about these magnificent flying machines?
Undoubtedly one of our greatest inventions, the personal computer has played an increasingly important role since invading our lives in the early 1980s. See how much you know about these iconic machines with these multiple choice questions...
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