GK
INVENTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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injecting
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disinfecting
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vaccinating
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meditating
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Detailed explanation-1: -While trying to discover a potion of immortality, Chinese alchemists of the Tang Dynasty accidentally discovered saltpeter, the main ingredient of gunpowder. Upon further experimentation, saltpeter was combined with charcoal and sulfur.
Detailed explanation-2: -The magnetic compass relies on the magnetic pull from the magnetic north pole, and was a tool that the explorers acquired from China. Simply put, it was a vital invention that was crucial for sailors to know in which direction they were going, which made for a more efficient and safer voyage.
Detailed explanation-3: -Playing cards were likely invented during the Tang dynasty around the 9th century AD as a result of the usage of woodblock printing technology.