General Knowledge · General Knowledge
रेडियम की खोज किसने की?
- 1कॉम्पैक्ट फ्लोरोसेंट लैंप
- 2ऑरविल और विल्बर राइट
- 3मैरी क्यूरी (1898 में)✓
- 4मोनाजाइट
सही उत्तर देखें
मैरी क्यूरी (1898 में)
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