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JAMB Chemistry 2014 Paper

Question : 30

Total: 45

Solution:

Concept:

Brick-red flame colour is produced by calcium ions in a flame test.

Explanation:

Different metal ions give characteristic flame colours.

Copper ions give a blue-green colour.

Sodium ions give a golden-yellow colour.

Calcium ions give a brick-red colour.

Therefore, the compound likely contains

\mathrm{Ca}^{2+}

ions.

Answer:

C. calcium ions

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