BANK EPFO Stenographer (Group C) Mock Test 2023 People Development & Environment Environmental Issues Pollution

ધ્વનિ પ્રદૂષણનું માપન કયા એકમમાં કરવામાં આવે છે?

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ઓહ્મ
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ડેસિબલ
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જુલ
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એમ્પીયર
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