engineering recuitment DRDO CEPTAM STA B Tier I (Sr. Technical Assistant) Mock Test 2022 General Science Biology Ecology & Environment

निम्नलिखित में से कौन सी गैस, ग्रीनहाउस प्रभाव उत्पन्न करती है?

1
CO2
2
SO2
3
NO2
4
O3
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