SSC SSC JE Civil 2025 Mock Test Series (Paper 1 & Paper 2) General Knowledge Ecology and Environment Environmental pollution

ନିମ୍ନ ରେ କେଉଁ ଟି ଏକ ଦ୍ଵିତୀୟକ ପ୍ରଦୂଷକ ଅଟେ ? 

1
କାର୍ବନ ମୋନୋଅକସାଇଡ 
2
ଧୂଆଁ 
3
କାର୍ବନ ଡାଇଅକସାଇଡ 
4
ଫ୍ଲାଇ ଆଶ 
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