Unit 2 Ch 7 : Lifelines of National Economy — Social Studies STD 10 — Question

These are used for transporting crude oil, petroleum products and natural gas from oil and natural gas fields to refineries, fertilizer factories and big thermal power plants. Solids can also be transported through a pipeline when converted into slurry.
Initial cost of laying pipelines is high but subsequent running costs are minimal. It rules out trans-shipment losses or delays.