18.
वैज्ञानिक कारण स्पष्ट करो ।
कापर का मन्द H,SO, के साथ की प्रक्रिया से हाइड्रोजन गैस मुक्त नहीं होती है।
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Answer:
Please post it in English it is physics right
Explanation:
I want clear question in English
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