During the Question Hour in Rajya Sabha, he also said that among the 20 toppers this year, 19 were engineers and one was a doctor.
He was replying to supplementaries after BJP member Subramanian Swamy asked whether the government had received representations to include Ayurveda as an optional subject for civil services examination.
In his written reply, the Minister of State for personnel, public grievances and pensions said the issue was under examination by the government.
Rathore said doctors and engineers cracked the examination but often chose subjects other than what they had studied during graduation. Not even ten per cent of the doctors opted for medical science as an option, he added.