Is a Son or Daughter Legally Adopted after Retirement by a Centra Govt Employee eligible for family pension?

I am a retired Public Sector Undertaking(Central Govt.) employee drawing Pension. I am bachelor and do not have any family member. I am contemplating to legally adopt a girl child as my Daughter. My query is that, whether, after my death, my adopted daughter will be legally eligible for family pension from my employer. Please advise and if possible, quote some legal decisions in this context.