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

ભારતનો પ્રથમ બહુ-તરંગલંબાઈ અવકાશ પ્રેક્ષણાલય ઉપગ્રહ કયો છે?

1
SRMSAT
2
SARAL
3
Jugnu
4
Astrosat
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