Which of the following matches is correct?

  • A
    Moissan process $\Rightarrow$ Preparation method of $F_2$
  • B
    Solvay process $\Rightarrow$ Preparation method of $Na_2CO_3$
  • C
    Spring reaction $\Rightarrow$ Preparation method of Hypo
  • D
    Ostwald's process $\Rightarrow$ Preparation method of $HNO_3$

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