The blue colour in an oxidising flame of a microcosmic bead containing Cu2+ is due to: | Qualitative and Quantitative Analysis — Chem-Mantra | Chem-Mantra

⚗️ Chem-Mantra JEE Advanced Chemistry →

Qualitative and Quantitative AnalysismediumMCQ SINGLE

Question

The blue colour in an oxidising flame of a microcosmic bead containing Cu2+ is due to:

Answer: A

💡 Solution & Explanation

In the microcosmic salt bead test, Cu2+ reacts with sodium metaphosphate (NaPO3) to form sodium copper orthophosphate, NaCuPO4, which is blue.

💬

Still have doubts about this question?

Send it to our AI chemistry tutor on WhatsApp — gets answered in minutes

Ask on WhatsApp →

Practice 22,000+ questions like this

AI-adaptive practice, video lectures, and full JEE Advanced Chemistry content — all in one place.

Explore Courses →Free on YouTube

JEE Advanced · JEE Mains · NEET · IChO · AP Chemistry