Colours in the sky on Diwali night are metals – chemistry of firecrackers, and their effects | HT Explainers

Hindustan Times · Prerna Madan · 2026-11-07 06:39 UTC

Strontium burns red and barium green. HT explains the chemistry of firecrackers, and what the metals do to air pollution and to health. | HT Explainers

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