Q. Natural gas is obtained (Solved)
1. as by-product from blast furnace
2. as by-product from petroleum refining
3. from earth's surface usually along with crude
4. from ammonia
5. None of the above
- c. from earth's surface usually along with crude
1. as by-product from blast furnace
2. as by-product from petroleum refining
3. from earth's surface usually along with crude
4. from ammonia
5. None of the above