Question

why petrolatum is called black gold
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Answer 1

because kaala dhan rakhna mana hai ...lol

Explanation:

thanks for free points

Answer 2

Answer:

HEY MATE ,

PETROLEUM IS CALLED BLACK GOLD BECAUSE IT IS EXPENSIVE AND IT IS A FOSSIL FUEL AND A NATURAL RESOURCE .

HOPE IT HELPS YOU MATE .

HAVE A GOOD DAY AHEAD .