What are the main categories of impurities found in sewerage ?सीवरेज में पाई जाने वाली अशुद्धियों की मुख्य श्रेणियाँ क्या हैं ?
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Correct answer: B. Organic and inorganic impuritiesकार्बनिक और अकार्बनिक अशुद्धियाँ
Explanation
Sewage contains mainly organic impurities (faeces, food waste, dead plants and animals) and inorganic impurities (nutrients, salts, metals), along with disease-causing micro-organisms. The main categories of impurities are therefore organic and inorganic.सीवेज में मुख्यतः कार्बनिक अशुद्धियाँ (मल, भोजन का कचरा, मृत पादप-जंतु) और अकार्बनिक अशुद्धियाँ (पोषक तत्त्व, लवण, धातुएँ) होती हैं, साथ में रोगजनक सूक्ष्मजीव भी। अतः अशुद्धियों की मुख्य श्रेणियाँ कार्बनिक और अकार्बनिक हैं।More Environmental Studies (EVS) questions
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