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7 months ago
HCL direct piyu ya dilute karke?
7 months ago
dekh bhai bekar mat soch in sab me kuch nahi rakha hai
chaku le aur gale par chala de very effictive
7 months ago
mix 3 part of h2so4 will 80 % concentration V/V
and pure water 5 parts
resulting mixture ka concentration kya hoge pehle voh calculate karne phir go ahead