Question

Which one of the following cells can convert chemical energy of \(H_2\) and \(O_2\) directly into electrical energy?

• A. Mercury cell
• B. Daniel cell
• C. Fuel cell
• D. Lead storage cell

Hint:

Hydrogen–oxygen fuel cell directly converts chemical energy into electrical energy and produces water as the only product.

Answer 1

The Correct Option is C

Step 1: Identify cell using \(H_2\) and \(O_2\).
A fuel cell uses hydrogen as fuel and oxygen as oxidant.
Step 2: Direct conversion.
Fuel cell converts chemical energy of reactants directly into electrical energy without combustion.
Step 3: Hence correct option.
\[ H_2 + \frac{1}{2}O_2 \rightarrow H_2O \] This reaction produces electricity in fuel cell.
Final Answer: \[ \boxed{\text{Fuel cell}} \]