हिंदी

Air pollution is caused by ______. -

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प्रश्न

Air pollution is caused by ______.

विकल्प

  • Organic and inorganic industrial effluents discharged into rivers

  • Presence of high proportion of sulphur dioxide, carbon monoxide and air-borne particulate materials

  • Unwanted sounds from industries, generators, saws and pneumatic and electric drills

  • Overdrawing of groundwater

MCQ
रिक्त स्थान भरें

उत्तर

Air pollution is caused by presence of high proportion of sulphur dioxide, carbon monoxide and air-borne particulate materials.

shaalaa.com
Industrial Pollution and Environmental Degradation
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