Question:
When water is heated from $0^\circ$C to $8^\circ$C, its volume
When water is heated from $0^\circ$C to $8^\circ$C, its volume
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Water's density is highest at $4^\circ$C, which is why aquatic life survives in cold climates as water remains liquid below ice.
Updated On: Apr 7, 2026
- First decreases up to $4^\circ$C and then increases.
- First increases up to $4^\circ$C and then decreases.
- increases continuously
- decreases continuously
- does not change
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The Correct Option is A
Solution and Explanation
Step 1: Water exhibits an anomalous expansion behavior between $0^\circ$C and $4^\circ$C. Unlike most substances, its density increases as it is heated from $0^\circ$C to $4^\circ$C, causing the volume to decrease.
Step 2: At exactly $4^\circ$C, water reaches its maximum density, meaning its volume is at a minimum.
Step 3: When heated beyond $4^\circ$C, water behaves normally, expanding as the temperature increases, leading to an increase in volume.
Step 4: Therefore, the correct answer is (A). \bigskip
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