Which of the following emits light when exposed to oxy – hydrogen flame?
Ca (OH) 2
Ca (HCO3)2
CaCO3
CaO
CaO when exposed to oxy – hydrogen flame emits light known as lime light.
Therefore, option(4) is correct.
NEET 2026 LIVE: NTA application correction window closes today; admit card, exam dates, pattern
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NEET 2026 Registration LIVE: NTA extends MBBS, BDS application deadline to March 11; how to apply
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