NEET Chemistry The s-Block Elements Questions Solved


Ca on exposure in moist air form a layer on surface as-

(A) CaCO3                                             

 (B) CaOH2

(C) CaCO3.CaOH2                               

 (D) CaO

(C). Ca+H2OCaO+H2

      CaO+H2OCaOH2

     CaOH2+CO2CaCO3+H2O

Difficulty Level:

  • 15%
  • 26%
  • 45%
  • 15%
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