Q.2 The shining finish is given to the walls is given by
(A) Calcium oxide (B) Calcium carbonate
(C) Calcium hydroxide (D) Carbon-di-oxide
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Answer:
c Calcium hydroxide
Explanation:
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Answer:
C) Calcium hydroxide
Explanation:
A solution of slaked lime (Ca(OH)2) is used to white wash the walls. Calcium hydroxide reacts with the carbon dioxide in air to form thin layer of calcium carbonate on the walls. It gives a shiny finish to the walls.
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