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Question

The hottest region of Bunsen flame shown in the figure below is:
472828.png
  1. region 2
  2. region 4
  3. region 3
  4. region 1

A
region 3
B
region 4
C
region 1
D
region 2
Solution
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The hottest region of Bunsen flame shown in the figure is region 2. It is just above the tip of the primary flame. It reaches about 1,500 °C (2,700 °F).
Region- 1 (Pre-heating zone)
Region- 2 (Primary combustion zone, hottest zone)
Region- 3 (lnternal zone)
Region- 4 (Secondary reaction zone)

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