| Hint | Answer | % Correct |
|---|---|---|
| Tto fill decorative balloons, weather balloons and airships | Helium | 92%
|
| Dental amalgam, sphygmomanometers, and thermometers | Mercury | 75%
|
| Computer chips, solar cells, transistors | Silicon | 75%
|
| Iron and steel industries, pencils, brushes in electric motors and in furnace linings | Carbon | 67%
|
| Car batteries, radiation protection | Lead | 67%
|
| Rechargeable batteries for mobile phones, laptops, digital cameras | Lithium | 67%
|
| Production of steel, plastics and textiles, brazing, welding, rocket propellant | Oxygen | 67%
|
| Vacuum tubes, high-voltage indicators, lightning arresters, wavemeter tubes | Neon | 42%
|
| Rocket fuel igniter, in pyrotechnic flares | Boron | 33%
|
| Agricultural chemicals, insecticides, dyes, pharmaceuticals, flame-retardants | Bromine | 33%
|
| Cement, mortar, glass industry, in making plastics | Calcium | 33%
|
| Jewellery, catalytic converters for cars, trucks and buses | Platinum | 33%
|
| Production of brilliant mirrors, in liquid thermometers | Gallium | 17%
|
| Processing of glass, pigments, textiles, paper, metal adhesives | Arsenic | 8%
|
| Hard alloys for fountain pen tips, instrument pivots, needles | Osmium | 8%
|