Question

What is the colour of the flame when magnesium burns in the presence of oxygen?

• A. White
• B. Blue
• C. Green
• D. Red

Answer 1

The correct option is A

White

The explanation for the correct answer:

(A) White

• Magnesium burns with a dazzling white flame.
• It forms magnesium oxide.
• $\underset{\mathrm{magnesium}}{2\mathrm{Mg}\left(\mathrm{s}\right)}+\underset{\mathrm{oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}\to \underset{\mathrm{magnesium}\mathrm{oxide}}{2\mathrm{MgO}}$

Hence, the correct option is (A).