📊 Physics
Q. The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason?
  • (A) The density of water is maximum at 4°C
  • (B) Ice is a bad conductor of heat
  • (C) Since, the surface of the lake is at the same temperature as the air, no heat is lost
  • (D) None of the statements
✅ Correct Answer: (A) The density of water is maximum at 4°C

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