MHT CET · Chemistry · Electrochemistry

Which of the following acts as oxidising agent in hydrogen- oxygen fuel cell?

A $H_{2}$
B $O_{2}$
C $K O H$
D C

Verified Solution

Answer & Solution

Correct Answer

(B) $O_{2}$

Step-by-step Solution

Detailed explanation

Hydrogen – oxygen fuel cell is electrochemical cell that converts the chemical energy of hydrogen which is a fuel and oxygen which act as an oxidising agent into electricity through a pair of redox reaction. Thus, option

(b)

is a correct.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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