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Matter in Our Surroundings — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings1 Mark
MCQ
Which is more effective in cooling:
  • A
    Lce at 00C
  • B
    Water at 00C
  • C
    Water at 1000C
  • D
    Lce at 1000C
✓

Answer

  1. Lce at 00C

Explanation:

Lce is more effective than water in cooling liquids because ice needs additional energy to convert itself to water at zero degree celsius.

Thus it absorbs more heat from the liquid system making the liquid system cooler so ice at 00C is cooler than water at 00C.

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