RFID chips: (I) are used to track goods in distribution. (II) are used to track job progress in production. (III) are used to provide special instructions to operators. (IV) can be used in inventory record keeping.

Explanation:

Radio Frequency Identification (RFID) is a form of wireless communication that used to uniquely identify an object, person or animal.

(1) RFID chips are used to track goods in distribution.

These chips built-in a scanner that is used to track goods in distribution. for example, logistic companies using this tool to track goods in their distribution.

(2) RFID chips are used to track job progress in production:

These chips are used in the factory to track the job progress in production. For example, in the Biscuit Factory, counting of numbers of biscuits and then wrapping into packet.

(3) RFID chips are used to provide special instruction to the operator:

These chips are used to provide special instruction to the operator working on the machine in the industry of textile, flour mills, and steel industry, etc.

(4) RFID chips can be used in inventory record keeping:

These chips are used in the scanner that tracks the inventory record. Large organizations and firms that are producing products use RFID chip built-in scanner to keep the inventory record. These scanners track inventory and submit data to a centralized system for making decisions etc.

explanation:

a gas is not used in hydraulic machines as the fluid because gas is easily compressible and so if a gas is used, the energy would mostly go into compressing a gas. therefore a liquid is used in hydraulic machines as the fluid.