Prelims GS November 13, 2025

1. Consider the following statements with reference to salt weathering:

  1. Salts in rocks expand due to thermal action, hydration and crystallization.
  2. Salts like calcium, sodium, magnesium and barium have a tendency to expand.
  3. Salt weathering is a typical example of chemical weathering.

Which of the statements given above is/are correct?