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Among the following which one causes maximum indoor chemical pollution? - Biology

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प्रश्न

Among the following which one causes maximum indoor chemical pollution?

विकल्प

  • Burning coal

  • Burning cooking gas

  • Burning mosquito coil

  • Room spray

MCQ

उत्तर

Burning coal

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 16: Environmental Issues - MULTIPLE CHOICE QUESTIONS [पृष्ठ ११४]

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एनसीईआरटी एक्झांप्लर Biology [English] Class 12
अध्याय 16 Environmental Issues
MULTIPLE CHOICE QUESTIONS | Q 10. | पृष्ठ ११४

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