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Chemical Equilibrium — Chemistry STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceChemistryChemical Equilibrium1 Mark
Question
Why was calcium oxide used in theatre lighting?
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Answer

Calcium oxide (CaO) on strong heating glows with a bright white light. Hence, CaO was used in theatre lighting, which gave rise to the phrase ‘in the limelight’.

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