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

નીચેનામાંથી કયું ગૌણ પ્રદૂષક છે?

1
કાર્બન મોનોક્સાઈડ
2
ધુમ્મસ
3
કાર્બન ડાયોક્સાઇડ
4
ઊડતી રાખ
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