Step 1: The "Dulari Kanya" scheme was launched by the Arunachal Pradesh government.
Step 2: Under the scheme, every girl child born in government hospitals is given a fixed deposit certificate of ₹20,000, to be redeemed on attaining adulthood.
Step 3: The scheme aims to encourage institutional deliveries and reduce infant mortality. \[ \boxed{\text{Arunachal Pradesh}} \]
Match each state to its known girl-child welfare scheme to identify "Dulari Kanya."
Only Arunachal Pradesh's scheme carries the name "Dulari Kanya."
So, the correct answer is Arunachal Pradesh.