Hey, I want to know that is the Civil services preliminary exam conducted by UPSC is replaced by aptitude test or not ?

No , Civil services preliminary exam of UPSC is not replaced by aptitude test.

Civil services exam having phases as:
Preliminary exam
Main exam
Interview
Medical test

Important Dates for upcoming CSE exam :

Date of Notification:
16 May, 2015

Last Date to Apply:
12 June, 2015

Exam Date:
23 August, 2015

Civil Services (Main):
18 December, 2015


CSE (Prelims) Pattern:

The Preliminary Examination consists of two papers of Objective type (multiple choice questions) and carry maximum of 400 marks.

Prelims Paper Duration Q. Marks
Paper I - General Studies 2 Hours 100 200
Paper II - Aptitude 2 Hours 80 200
Total 400


Prelims Syllabus for UPSC Civil Services Exam:
General Studies Paper I

1. Current events of national and international importance
2. History of India and Indian national movement
3. Indian and World Geography
4. Indian Polity and governance
5. Economic and social development
6. General issues on environmental ecology, bio-diversity and climate change
7. General Science

General Studies Paper II

1. Comprehension
2. Interpersonal skills which include communication skills
3. Logical reasoning & analytical ability
4. Decision making & problem solving
5. General mental ability
6. Basic numeracy
7. English language comprehension skills (Class X level)