The $pH$ of water is $7$. When a substance $Y$ is dissolved in water,the $pH$ becomes $13$. The substance $Y$ is a salt of......

  • A
    Strong acid and strong base
  • B
    Weak acid and weak base
  • C
    Strong acid and weak base
  • D
    Weak acid and strong base

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Reason $: -$ $Na_3PO_4$ in its aqueous solution undergoes anionic hydrolysis.

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