Chemistry · Matter and Pure Substances
निम्नलिखित में से कौन-सा एक मिश्रण नहीं है, बल्कि एक शुद्ध तत्व है?
- 1सीमेंट (Cement)
- 2दूध (Milk)
- 3पारा / मरकरी (Mercury)✓
- 4वायु (Air)
सही उत्तर देखें
पारा / मरकरी (Mercury)
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