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  4. Which of the following will have the highest pH ?

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Q. Which of the following will have the highest $pH$ ?

AP EAMCETAP EAMCET 2020

Solution:

(a) For, saturated solution of $NaOH , p H=15$
(b) $1\, M\,HCl \,\,p H \propto 0$
(c) Human saliva $p H=6.4$
(d) Lemon juice $p H=2.2$