What is the colour of the flame when magnesium burns in the presence of oxygen?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. White.
Magnesium burns with a dazzling white flame when oxygen is present.
Magnesium burns at a high temperature, and as magnesium atoms burn, they release a distinctive emission spectrum that causes this brilliant white light.
The bright white flame is produced when magnesium and oxygen react to generate magnesium oxide and release a considerable quantity of energy in the form of heat and light.