Assertion: Galvanic cells containing hydrogen, methane, methanol etc. as fuels are called fuel cells.
Reason: They are designed to convert the energy of combustion of fuels directly into electrical energy.

Options

A. if both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false
D. If the assertion and reason both are false.

Answer

To solve the question, we need to analyze the assertion and reason provided, and determine their validity.

### Step 1: Understand the Assertion
The assertion states that "Galvanic cells containing hydrogen, methane, methanol, etc. as fuels are called fuel cells."
- **Analysis**: This statement is true. Fuel cells are indeed a type of galvanic cell that utilizes fuels like hydrogen, methane, and methanol to generate electricity.

### Step 2: Understand the Reason
The reason states that "They are designed to convert the energy of combustion of fuels directly into electrical energy."
- **Analysis**: This statement is also true. Fuel cells convert the chemical energy from the fuel (through a chemical reaction) directly into electrical energy without going through a combustion process that produces heat.

### Step 3: Determine the Relationship
Now we need to determine if the reason is a correct explanation of the assertion.
- The assertion correctly identifies fuel cells as a type of galvanic cell that uses specific fuels.
- The reason accurately describes the function of fuel cells, emphasizing their ability to convert chemical energy directly into electrical energy.

### Conclusion
Both the assertion and reason are true, and the reason provides a correct explanation for the assertion.

### Final Answer
Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

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