NextMockपरीक्षा शोधा, उदा. SSC CGL, UPPSC, Lekhpal
State PCS PYQPrelims 2021

UPPCS · प्रश्न 40

Which of the following is an indicator of air pollution?

  1. Puffballs
  2. Algae
  3. Lichen
  4. Moss
उत्तर दाखवा आणि स्पष्टीकरण

उत्तर: (C) Lichen

स्पष्टीकरण

Lichens are highly sensitive to SO2 and disappear in polluted air.