M Ramachandran contended that when aspirants were allowed to write answers in any of the 22 languages of the country, then the answer key also should be given in Tamil.
However the evaluators are correcting answers using keys prepared only in Hindi and English, he said.
"As a result of this procedure, the examiners could not properly evaluate answer papers written in any language other than Hindi and English," he submitted
Ramachandran said he made a representation to the UPSC chairman to provide the keys in Tamil so that his paper would be evaluated properly. But he got a reply stating there was no discrepancy in evaluation.
He urged the court to direct UPSC to evaluate his mains exam answer scrips using answer keys in Tamil.
He also prayed for quashing the orders that the answer keys would be provided only in Hindi and English and not other languages and for the keys to be given in Tamil for the civil services main examination held in 2011.
Justice B Rajendran admitting the petition ordered notice returnable within two weeks.
