Which gas has been used since ancient times to remove lignin from wood?

  • A
    $H_2$
  • B
    $O_2$
  • C
    $N_2$
  • D
    $Cl_2$

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The correct order of acidic strength is:

Which of the following interhalogen compounds does not exist?

The electronic configuration of halogen is

Iodine can exhibit which of the following oxidation states?

Identify the correct statements from the following:

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