Question

biogas plant : methane :: fire extingulsher:​

Answer 1

Biogas plant : methane :: fire extinguisher : Carbon dioxide

Related words

• A biogas plant is the name generally given to an anaerobic digester which treats farm wastes.
• Animals, as well, can form biogas too, particularly methane.
• Ruminants like cows, sheeps, camels and deers, can also form methane during their process of digestion while making food in their rumen.
• Carbon dioxide ($CO_{2}$) is the only extinguishing gas which is utilised in fire extinguishers as well as in the fire extinguishing equipments.
• So Carbon dioxide is the answer.

Answer 2

Answer:

The correct answer is biogas plant : methane :: fire extingulsher:​ carbon dioxide

Explanation:

This is an example of related words. Related words are the words whose meanings are close enough to the synonymy group to be of interest to the user. The correct answer is biogas plant : methane :: fire extingulsher:​ carbon dioxide. Here, in this example biogas plant is related to methane and fire extinguisher is related to carbon dioxide.