Question

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Only of Scientific reasons✌​

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 farmed during combustion of unsaturated compounds. <br> (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.

Answer 2

Answer:

(ii) .The bottom of a pond appears to be raised due to the phenomenon of REFRACTION. While having a look into the pond, light travels from denser medium(water) to rarer medium(air) after reflecting from the surface of the pond. ... This creates illusion of raised bottom as in this case of the pond.

(I). 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 farmed during combustion of unsaturated compounds. ... Hence, naphthalene burns with a yellow flame.

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