Civil Services OPSC OAS Mock Test Series 2025 General Knowledge Ecology and Environment Environmental pollution

ନିମ୍ନଲିଖିତ ମଧ୍ୟରୁ କେଉଁ ପ୍ରଦୂଷକ କାରର ନିଷ୍କାସନରୁ ବାହାରି ନାହିଁ?

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ନାଇଟ୍ରୋଜେନ୍ ଅକ୍ସାଇଡ୍
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ସଲଫର ଡାଇଅକ୍ସାଇଡ
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ଉଡ଼ିବା ପାଉଁଶ
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ଲିଡ୍
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