S-Block Elements Group 1 and 2-Industrial Uses (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry): Questions 1 - 7 of 7

Hard cement

Quick lime

Sorel cement

Magnesia alva

Dead plaster

Burnt plaster

Keene cement

Chalk

5 % Al + 0.5 % Mg + 0.5 % Mn + 94 % Cu

90 % Al + 0.5 % Mg + 0.5 % Mn + 4% Cu

95 % Al + 0.5 % Mg + 0.5 % Mn + 4% Cu

65 % Al + 0.5 % Mg + 25 % Mn + 4.5 % Cu

formation of soluble magnesium hydroxide

formation of soluble calcium carbonate

formation of volatile calcium derivative

reversal of original reaction

and

, silica, water

and silica

, water

150 ⁰ C

180 ⁰ C

200 ⁰ C

120 ⁰ C