You have been provided some materials( lemon, soap, detergent and curd). You have to test their acidity or basicity with the help of natural indicator without using pH and litmus paper or solution. answer as fast as you all can.
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Explanation:
Hey lemon will be acid
soap is base
detergent is base
curd is acidic
ph of acid from 0 to 7
ph of base from 7 to 12
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