1)

The hottest region of Bunsen flame shown in the figure given below is

23112020135_7_Ans.JPG


A) region 2

B) region 3

C) region 4

D) region 1

Answer:

Option A

Explanation:

Region I (Pre-heating zone)

Region 2 (Primary combustion zone, hottest zone)

Region 3 (Internal zone)

Region 4 (Secondary reaction zone)