Environment & Ecology · Environmental Science
कौन सी भारी धातुएं पानी में घुल जाती हैं और गंभीर प्रदूषण का कारण बनती हैं?
- 1कैडमियम (Cd), लेड (Pb), पारा (Hg)✓
- 2कैल्शियम (Ca), मैग्नीशियम (Mg), सोडियम (Na)
- 3सोना (Au), चांदी (Ag), प्लेटिनम (Pt)
- 4लोहा (Fe), एल्युमिनियम (Al), तांबा (Cu)
सही उत्तर देखें
कैडमियम (Cd), लेड (Pb), पारा (Hg)
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