railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Current Affairs Days and Events

প্রথম বিশ্ব পরিবেশ দিবস (WED) কোন বছরে পালিত হয়েছিল?

1
1972
2
1980
3
1974
4
1979
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