If you were asked what would be the most expensive thing in the world, then things like diamond, platinum, gold or uranium would probably come in your mind. It is true that all these things are very valuable. But their value is nothing in comparison to that thing, which is said to be the most expensive substance in the world. The price of this substance is so high that even if the 2 richest men of India, i.e. Mukesh Ambani and Gautam Adani sell their entire property, they cannot buy…
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