Shanker, aged 22, hailing from Madhya Pradesh, was found guilty of raping and killing the minor in April, 2010.
Pronouncing the judgement, Additional District and Sessions Judge Sanjiv Gupta said the offences committed by the convict falls in the "rarest of the rare category".
The judge held him guilty under section 302 RPC (murder) and 376 RPC (rape).
The court directed the state government to pay a compensation of Rs two lakh to the victim's family within a month.