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P-1 Carbon Compounds — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceP-1 Carbon Compounds2 Marks
Question
Naphthalene burns with a yellow flame.
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Answer

(1) Naphthalene is an unsaturated compound. In unsaturated hydrocarbon the proportion of carbon is larger than that of saturated hydrocarbon. As a result, some unburnt carbon particles are also formed during combustion of unsaturated compounds.

(2) In the flame. these unburnt hot carbon particles emit yellow light and therefore the flame appears yellow. Hence, naphthalene burns with a yellow flame.

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