हिंदी

______ pollutant is an air pollutant emitted directly from a source. -

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प्रश्न

______ pollutant is an air pollutant emitted directly from a source.

विकल्प

  • Primary

  • Secondary

  • Tertiary

  • All of these

MCQ
रिक्त स्थान भरें

उत्तर

Primary pollutant is an air pollutant emitted directly from a source.

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Major Hazards in India
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