Q16 / 125 · BITSAT 2014 · Chemistry

When rain is accompanied by a thunderstorm, the collected rain water will have a $\mathrm{pH}$ value:

  • Correct answer
    A
    Slightly lower than that of rain water without thunderstorm.
  • B
    Slightly higher than that when the thunderstorm is not there.
  • C
    Uninfluenced by occurrence of thunderstorm.
  • D
    Which depends upon the amount of dust in air.

Solution

Normal rain water has pH 5.6. Thunderstorm results in the formation $\mathrm{NO}$ and $\mathrm{HNO}_{3}$ which lowers the $\mathrm{pH}$

Hence, the correct answer is option: 'A'.

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