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1. Solution and colligative properties — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry1. Solution and colligative properties1 Mark
MCQ
When a solute is present in trace quantities the following expression is used
  • A
    Gram per million
  • B
    Milligram percent
  • C
    Microgram percent
  • ✓
    Parts per million
✓

Answer

Correct option: D.
Parts per million
d
When the solute is present in trace quantities it is convenient to express the concentration in parts per million ($ppm$)

It is defined as the quantity of the solute in grams present in $10^6 \,grams$ of the solutions.

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