NextMockపరీక్షలు వెతకండి, ఉదా. SSC CGL, UPPSC, Lekhpal
State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · ప్రశ్న 96

Which of the following is called 'quicklime'?

  1. CaCO₃
  2. Ca(OH)₂
  3. CaCl₂
  4. CaO
  5. None of the above / More than one of the above
సమాధానం చూపించు & వివరణ

సమాధానం: (D) CaO

వివరణ

Heating limestone gives quicklime (CaO); adding water gives slaked lime Ca(OH)₂.

  • (A) తప్పు

    Wrong: limestone.

  • (B) తప్పు

    Wrong: slaked lime.

  • (C) తప్పు

    Wrong: calcium chloride.

  • (D) సరైనది

    Correct: calcium oxide is quicklime.

  • (E) తప్పు

    Wrong: only one of the options A–D is correct.