Understanding Pipeline Transportation Correctness

This question requires us to evaluate the accuracy of four statements concerning the use and capabilities of pipelines in transportation.

Statement Analysis: Pipeline Usage

• Statement (A): Pipelines are extensively used to transport liquid and gases.
  This statement is correct. Pipelines are a primary and highly efficient method for transporting large volumes of liquids (like crude oil, refined petroleum products, water) and gases (like natural gas) over long distances.
• Statement (B): Pipelines can also be used to transport liquified coal.
  This statement is also correct. Coal can be converted into a liquid form through a process called coal liquefaction. This liquefied coal can then be transported via pipelines, similar to other liquid fuels.
• Statement (C): Milk is not supplied through pipelines in any country of the world as it is unhealthy.
  This statement is incorrect. While not the most common method for final consumer delivery, pipelines are indeed used in the dairy industry, for instance, to transport milk from farms to processing facilities. Concerns about health are managed through specific infrastructure and hygiene protocols.
• Statement (D): LPG is supplied only through gas cylinders for safety reasons.
  This statement is incorrect. Although LPG (Liquefied Petroleum Gas) is widely distributed in cylinders, it is also supplied through pipelines in various residential and industrial settings. Safety is ensured through stringent engineering and operational standards, regardless of the distribution method.

Determining the Correct Combination

Based on the analysis:

• Statement (A) is correct.
• Statement (B) is correct.
• Statement (C) is incorrect.
• Statement (D) is incorrect.

Therefore, the correct statements are (A) and (B) only.