Chemistry 2010 JAMB Past Questions - Question 37: A compound gives an orange-red colour to a nonluminous flame. This compound is likely to contain

Correct Answer

B

Explanation

* **Flame tests:** Different elements emit specific colors when heated in a flame, allowing for their identification.
* **Non-luminous flame:** This indicates the absence of complete combustion, suggesting the compound might not contain volatile organic components.
* **Orange-red color:** This corresponds to the emission spectrum of calcium in a non-luminous flame.

While other elements can also emit colors in various flame tests, the combination of a non-luminous flame and an orange-red color strongly suggests the presence of calcium. Here are some additional details:

* The specific shade of orange-red can vary depending on the compound and other elements present.
* Other elements like strontium and barium can also emit orange-red colors, but with slightly different nuances.
* For definitive identification, further tests or information about the compound's origin might be needed.

If you have any more information about the compound, such as its origin or other properties, it could help narrow down the possibilities further.