Which of the following is not correct for H₂O₂ ?

• A

  Pure H₂O₂ is very pale blue

• B

  It smells like HNO₃

• C

  It forms hydrate ${\mathrm{H}}_2{\mathrm{O}}_2\cdot {\mathrm{H}}_2\mathrm{O}$

• D

  It catches fire in air