A substance ‘X’ is used in white-washing and is obtained by heating limestone in the absence of air. Identify ‘X’.
(a)CaOCl₂ (b)Ca(OH)₂
(c)CaO (d)CaCO₃
"

Academic Chemistry NCERT Class 10

Correct answer: (c) CaO

Explanation: Limestone decomposes on heating to form calcium oxide and carbon dioxide.

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Updated on: 10-Oct-2022

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(a)CaOCl₂	(b)Ca(OH)₂
(c)CaO	(d)CaCO₃

A substance ‘X’ is used in white-washing and is obtained by heating limestone in the absence of air. Identify ‘X’.(a)CaOCl2(b)Ca(OH)2(c)CaO(d)CaCO3"

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A substance ‘X’ is used in white-washing and is obtained by heating limestone in the absence of air. Identify ‘X’.
(a)CaOCl₂ (b)Ca(OH)₂
(c)CaO (d)CaCO₃
"