engineering recuitment BPSC AE Mock Test 2025 General Knowledge Science Technology and Inventions

खालीलपैकी कोणी उत्प्रेरक म्हणून प्लॅटिनमवर पहिले निरीक्षण केले?

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मोसेली
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मेंडेलीव्ह
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डोबरानर
4
न्यूलँड्स
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