Science
सभी अम्लों में अनिवार्य रूप से पाया जाने वाला तत्व क्या है?
- 1सल्फर (S)
- 2कार्बन (C)
- 3हाइड्रोजन (H)
- 4ऑक्सीजन (O)
सही उत्तर देखें
Option ?
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