Take a beetroot chop them in small cubes boil them in water for few min , then filter the beetroot cubes from that water , now this beetroot water going to act as PH indicator (or) you can put the beetroot in blender and blend it for few sec , pour some water on it, now filter the water and take that water , that also 'll act as ph indicator
Lend the beetroot in a blender for a few seconds. Then add water to this. Filter the solution. The filtrate shall now act as a pH indicator.
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