Which solution has the highest $pH$ value?

  • A
    $1 \ M \ KOH$
  • B
    $1 \ M \ H_2SO_4$
  • C
    Chlorine water
  • D
    Water containing carbon dioxide

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Assuming complete ionisation,the $pH$ of $0.1\,M\,HCl$ is $1$. The molarity of $H_2SO_4$ with the same $pH$ is (in $,M$)

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