NextMockપરીક્ષાઓ શોધો, દા.ત. SSC CGL, UPPSC, Lekhpal
State PCS PYQPrelims 2019

UPPCS · પ્રશ્ન 52

Which one of the following materials contains calcium?

  1. China clay
  2. Corundum
  3. Gypsum
  4. Talc
જવાબ બતાવો અને સમજૂતી

જવાબ: (C) Gypsum

સમજૂતી

Gypsum is hydrated calcium sulphate (CaSO4·2H2O). China clay is kaolinite (aluminium silicate), corundum is Al2O3 and talc is magnesium silicate.