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BITSAT2014ChemistryEnvironmental ChemistryActual

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value:

Options

  1. ASlightly lower than that of rain water without thunderstorm.
  2. BSlightly higher than that when the thunderstorm is not there.
  3. CUninfluenced by occurrence of thunderstorm.
  4. DWhich depends upon the amount of dust in air.

Correct answer

A. Slightly lower than that of rain water without thunderstorm.

Step-by-step solution

Normal rain water has pH 5.6. Thunderstorm results in the formation NO and HNO ₃ which lowers the pH

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