Notifications
Clear all
Mineral and Power Resources
1
Posts
2
Users
0
Likes
177
Views
0
07/06/2021 1:14 pm
Topic starter
Why are petroleum and its derivatives called “black gold”?
1 Answer
0
07/06/2021 1:15 pm
Petroleum and its derivatives are black in colour but as valuable as gold, so we refer to it as “black gold”.