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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper II covers chemistry.

UPSC Combined Geo-Scientist, Prelims · 2020 · Paper II, Chemistry · Q80 of 120

Geo-Scientist Prelims 2020 Chemistry Q80: A cell is bathed in a solution that has a greater osmolarity than…

QuestionSolutions / tonicity

A cell is bathed in a solution that has a greater osmolarity than that of cytosol. The solution can be described as:

  1. (a) Hypertonic
  2. (b) Hypotonic
  3. (c) Isotonic
  4. (d) Hydrotonic

Answer: (a) Hypertonic

Outside solution has higher osmolarity than the cytosol → hypertonic; water leaves the cell, which shrinks (plasmolysis/crenation) → (a).

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