NextMockપરીક્ષાઓ શોધો, દા.ત. SSC CGL, UPPSC, Lekhpal
State PCS PYQPrelims 2021

UPPCS · પ્રશ્ન 68

'Ringelmann scale' is used to measure the density of:

  1. Smoke
  2. Polluted water
  3. Fog
  4. Noise
જવાબ બતાવો અને સમજૂતી

જવાબ: (A) Smoke

સમજૂતી

The Ringelmann chart grades the density (blackness) of smoke from chimneys.