Consider the following statements about the pipelines which are extensively used in the world to transport and gas:
Which of the above statements is/are correct?
Only 1&2
Only 2 &3
None of these
Only 1 &3
The pipelines under the surface of earth are protected from corrosion by connecting them to a more reactive metal Mg or Zn which is buried in the earth and connected to the pipelines by wire.Can't