Question

Q) name the first and most important fuel used in machines. where it found?​

Answer 1

Answer:

petrol and diesel found in Arab

Answer 2

The Chinese were the first to use petroleum as fuel as early as the fourth century BC. The earliest known oil wells were drilled in China in AD 347 or earlier. They had depths of up to about 800 feet (240 m) and were drilled using bits attached to bamboo poles.