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Water is used in car radiators as coolan...

Water is used in car radiators as coolant because

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true and reason is not the correct explanation of assertion.

C

If assertion is true and reason is false.

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Role of Coolants**: Coolants are substances used to absorb heat and regulate temperature in systems, such as car engines. The primary function of a coolant is to prevent overheating. 2. **Identifying Properties of Water**: Water is chosen as a coolant due to its unique thermal properties. One of the most significant properties is its high specific heat capacity. 3. **Defining Specific Heat Capacity**: Specific heat capacity is the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius. Water has a high specific heat capacity, which means it can absorb a lot of heat without a significant increase in temperature. 4. **Application in Car Radiators**: In a car radiator, as the engine operates, it generates heat. The water in the radiator absorbs this heat effectively due to its high specific heat capacity. This helps in maintaining a stable engine temperature and prevents overheating. 5. **Conclusion**: Therefore, water is used in car radiators as a coolant because it can absorb a large amount of heat without a significant rise in temperature, which is essential for efficient engine operation. ### Final Answer: Water is used in car radiators as a coolant because it has a high specific heat capacity, allowing it to absorb a large amount of heat without a significant increase in temperature. ---
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