As many as 4,51,602 candidates took the examination, about 1.27 lakh more than the last year, at 2,137 centres in 59 cities.
"There were no incidents of protest from any of the centres in the country. We are very happy that the examination went off peacefully and without any law and order problem," Union Public Service Commission Secretary Ashim Khurana told PTI.
He said none of the chief secretaries of states, where the examination was conducted, reported any incident of protest.
A total of 9,44,926 candidates applied for the examination and of these, 6,80,455 downloaded their admit cards for appearing in the test.
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"As many as 4,51,602 candidates took the examination in various exam centres spread across the country. About 1.27 lakh more than last year," Khurana said.
A total of 3,24,101 had appeared in civil services preliminary examination in 2013.
The UPSC had this time chosen 14 new cities including Varanasi, Noida, Ghaziabad, Gurgaon, Gwalior and Jabalpur for conducting the exams. In Delhi alone, there were 222 examination centres.
The preliminary examination consists of two papers - Paper I and Paper II of two hours duration each. The first paper began at 9:30 AM and second started at 2:30 PM.
Some of the students complained of "errors" in Hindi translation of questions asked in English in Paper I. Both the government and UPSC officials did not comment on the issue.
A controversy had recently erupted over the pattern of examination as students demanding change in Civil Services Aptitude Test (CSAT) or Paper II, had taken to the streets in a violent agitation, claiming it put aspirants from rural areas or Hindi background at a disadvantage.