General Knowledge · Space Science
इसरो (ISRO) ने 19 अप्रैल को किस वर्ष भारत का पहला उपग्रह 'आर्यभट्ट' लॉन्च किया था?
- 11972
- 21975✓
- 31981
- 41978
सही उत्तर देखें
1975
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