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T3 CH4 Chemistry in Daily Life — Science STD 7 — Question

Tamilnadu BoardEnglish MediumSTD 7ScienceT3 CH4 Chemistry in Daily Life2 Marks
Question
Picture based question

Arul and Aakash were doing an experiment in which water was to be heated in a beaker. Arul kept the beaker near the wick in the yellow part of candle flame. Aakash kept the beaker in the outer most part to the flame. Whose water will get heated in a shorter time?
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Answer

The water heated by Akash will get heated in a shorter time because he kept his beaker near the hottest (non- luminous) zone of the flame. But Arul kept the beaker in the luminous zone which is moderately hot. So, it will take longer time.

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