Precious metals essentials quiz.
Learn how gold, silver, platinum and palladium are measured, priced and used. Every answer includes a short explanation.
Answers and explanations.
Try the quiz first. Then open any question to check the answer and the reason behind it.
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About how many grams are in one troy ounce?
Choices: 31.1 grams · 28.3 grams · 100 grams
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31.1 grams. One troy ounce is about 31.1035 grams. It is heavier than the ordinary ounce used for many everyday goods.
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What does 75% purity mean?
Choices: Three quarters of the weight is the named metal · The item weighs 75 grams · The price is 75% higher
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Three quarters of the weight is the named metal. Purity tells you the share of the item made from the named metal. A 100-gram item at 75% purity contains 75 grams of that metal.
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Why is gold used in some electronic contacts?
Choices: It resists corrosion and conducts electricity · It is magnetic · It is the lightest metal
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It resists corrosion and conducts electricity. Gold conducts electricity and resists corrosion, so a thin layer can help a contact remain reliable.
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Where are platinum-group metals commonly used?
Choices: Vehicle exhaust catalysts · Wooden furniture · Glass bottles
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Vehicle exhaust catalysts. Platinum, palladium and rhodium can help exhaust catalysts change harmful gases into less harmful ones.
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Is a daily reference price automatically the price a shop will pay you?
Choices: Yes · No
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No. No. A shop may include testing, refining, handling and its own buying margin.
Learn more about this topic.
- Gold price chart: the latest gold reference and history.
- Gold karat and fineness: what purity marks really mean.
- Gold purity calculator: turn karat into fine-metal grams.