UPSC CDS 1 2023 GK Paper
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Question : 32 of 120
Marks:
+1,
-0
Which of the following statements with regard to the reaction given below are
correct?
CaO (s) + H2O(l) → Ca(OH)2(aq) + Heat
1. Quicklime is used for white- washing of walls.
2. The solution of slaked lime is used for whitewashing of walls.
3. CaO reacts slowly with CO2 in air to form a thin layer of CaCO3 on walls.
4.Calcium hydroxide called 'slaked lime' is an inorganic compound.
Select the correct answer using the code given below.
correct?
CaO (s) + H2O(l) → Ca(OH)2(aq) + Heat
1. Quicklime is used for white- washing of walls.
2. The solution of slaked lime is used for whitewashing of walls.
3. CaO reacts slowly with CO2 in air to form a thin layer of CaCO3 on walls.
4.Calcium hydroxide called 'slaked lime' is an inorganic compound.
Select the correct answer using the code given below.
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