railway RPF Constable Mock Test Series 2024 General Knowledge Ecology and Environment Environmental pollution

______ ବାୟୁ ପ୍ରଦୂଷଣର ଏକ ଉପସେଟ ଯାହା ଆମ ବାୟୁମଣ୍ଡଳର ସବୁ ସ୍ଥାନରେ ନିଲମ୍ବିତ କ୍ଷୁଦ୍ର କଣିକାକୁ ସୂଚିତ କରେ।

1
ଲୋନ୍
2
ଏରୋଷଲ୍
3
ଜିନୋମ
4
ହୁମୁସ୍
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