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→Materials required:
==== Materials required: ====
==== Materials required: ====
Lemon juice, orange juice, curd, sugar, common salt, Amla, baking soda, vinegar, etc,
litmus paper, turmeric, Lemon juice, orange juice, curd, sugar, common salt, Amla, baking soda, vinegar, etc,
==== Reference links ====
==== Reference links ====
[https://dsert.kar.nic.in/kalikachetarike/7thEngScienceLS.pdf Kalika chetharike Material], [https://www.youtube.com/watch?v=eUejqjWC8Ws&list=PLj2EUkWt-rYYrW4F_jtKRCvjiu3i0OYL9&index=2 Litmus Paper test to detect Acid, Bases and Neutral substance]
[https://dsert.kar.nic.in/kalikachetarike/7thEngScienceLS.pdf Kalika chetharike Material], [https://www.youtube.com/watch?v=eUejqjWC8Ws&list=PLj2EUkWt-rYYrW4F_jtKRCvjiu3i0OYL9&index=2 Litmus Paper test to detect Acid, Bases and Neutral substance]