Give one word/phrase/term for the following sentence

1) These warehouses are owned, managed, and controlled by central and state governments or public authorities.
Ans:- Government warehouse

2) An art of exchanging ideas, facts, information, etc. from one person or entity to another.
Ans:-  Communication

3) A rail system in which the track consists of a single rail or a beam.
Ans:-  Monorail

4) A transport system used to carry petroleum and gases.
Ans:- Pipeline transport

5) A ministry that looks after the development of surface transport throughout the country.
ans:- Ministry of Road Transport and Highways