Multiple choice general knowledge science & technology

Sodium burns with oxygen with a

  1. brick red flame

  2. dazzling white flame

  3. blue flame

  4. golden yellow flame
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sodium burns with a characteristic golden yellow flame due to the intense emission of sodium D-lines at 589.0 and 589.6 nm. This is a classic flame test used to identify sodium compounds. Lithium burns brick red, copper burns blue-green, and magnesium burns dazzling white.

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