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Railways PYQCBT 1 2016

RRB NTPC · Question 96

Which of the following is used to melt ice? A. Salt B. Hydrogen C. Caustic Soda D. citric acid

  1. C

  2. A

  3. D

  4. B

Show answer & explanation

Answer: (B) A

Explanation

Salt lowers the freezing point of water, so spreading salt on ice makes it melt at temperatures below 0 °C; it is used to clear icy roads.