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NDA 2 2024 GAT, question 114

Topic: Chemistry

Q114

At which temperature does liquid water show maximum density ?

  1. (a) 299 K299\text{ K}
  2. (b) 277 K277\text{ K}Correct answer
  3. (c) 285 K285\text{ K}
  4. (d) 373 K373\text{ K}

Solution.

Answer: (b) 277 K277\text{ K}

  1. Water has its maximum density near 4°C, equivalent to about 277 K.
  2. Cooling below that temperature causes anomalous expansion until freezing.