Teaching UP TGT Mock Test Series 2025 General Science Biology Ecology & Environment

ନିମ୍ନଲିଖିତ ମଧ୍ୟରୁ କେଉଁଟି ଏକ ଦ୍ଵିତୀୟକ ବାୟୁ ପ୍ରଦୂଷକ?

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ମିଥେନ୍
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ବେଞ୍ଜିନ୍
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ଓଜୋନ୍
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ଅଙ୍ଗାରକାମ୍ଳ
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