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Practice #26,942
Q
हाल ही में इंडियन इंस्टीट्यूट ऑफ जियोमैग्नेटिज्म के वैज्ञानिकों ने एक स्वदेशी ओवरहॉसर मैग्नेटोमीटर विकसित किया है। भारतीय भू-चुंबकत्व संस्थान किस शहर में स्थित है?
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