Question

Which of the following is not the form of calcium carbonate ?
(A) Lime stone
(B) Chalk
(C) Marble
(D) Slaked lime
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Answer 1

Answer:

d) slaked lime is not form of the calcium carbonate

Answer 2

Option D is correct - Slaked lime is not a form of Calcium carbonate it is a calcium hydroxide (CaOH)2 .

Explanation:

Slaked limes are inorganic compound also known as calcium hydroxide . It is a colourless crystal or white powder and is produced when quicklime (calcium oxide) is mixed or slaked with water. It is also known as hydrated lime, caustic lime, builders' lime, slaked lime, and pickling lime.

Application of slaked lime are-

• Used in food preparation where it is known as E526.
• Limewater is also known as 'milk of lime'.
• Used in mortars, plasters, cements.
• Used in sewage treatment.
• As an insect repellent.

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