railway RRB JE (CBT I + CBT II) Mock Test 2024 Current Affairs Science and Technology

२०१९ मध्ये इस्रोने EMISAT सोबत किती नॅनो उपग्रह PSLV C-45 द्वारे प्रक्षेपित केले?

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२५
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२८
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२३
4
४०
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