Copper Acidproof Simple Method

Copper acid proof experiment with ammonia । it's very easy method नावसदर से ताम्बा एसिड प्रूफ करना

Copper acid proof experiment with ammonia । it's very easy method नावसदर से ताम्बा एसिड प्रूफ करना

21:37
#Next copper nitric acid proof#

#Next copper nitric acid proof#

0:09

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