Which of the following is preferred to carry materials like petroleum, natural gas, and ores in liquidified form ?

Pipelines

The correct answer is Option 3: Pipelines

Pipelines are preferred for transporting materials such as petroleum, natural gas, and ores in liquidified form because they provide a continuous, economical, and efficient mode of transport over long distances.

• Airways → mainly used for passengers and light, high-value goods
• Waterways → suitable for bulky goods but not preferred for continuous transport of such materials
• Railways → used for heavy goods but less efficient than pipelines for liquids and gases

NCERT: Pipelines are preferred to carry materials like petroleum, natural gas, and ores in liquidified form.