PrepMaticCurrent affairs · October 2026
TNPSC publishes tentative answer keys for Combined Technical Services subjects
On this page
On 7 October 2026 TNPSC put the tentative answer keys for 32 subjects of the Combined Technical Services Examination (Non-Interview Posts) on its website. These papers were held between 16 August and 19 September 2026. Candidates who disagree with a key can object until 5.45 pm on 14 October 2026.
What the press release says
The keys are for Paper I and Paper II in the subjects listed in the release. They include Civil Engineering (subject code 398), Architecture (401), Agriculture (491), Horticulture (493), Library and Information Science (594) and Archaeology (420), and the last entry is Tamil Eligibility Test, General Studies, Aptitude and Mental Ability (503). The listing runs to 32 subjects in all.
How to raise an objection
- Log in to the Commission's website and open the Exam Dashboard.
- Use the "Answer key Challenge" window. TNPSC says this is the only way to object.
- Submit within seven days of publication, which means by 5.45 pm on 14 October 2026.
- Follow the instructions and procedure given on the website.
Objections sent by post or e-mail will not be accepted. The key is tentative, and TNPSC's answer-key page lists tentative and final keys separately.
Why it matters
The challenge window is short and strict, so check your response sheet against the key at once, and give clear reasons for each question you challenge. Our TNPSC Combined Technical Services guide explains the exam; the Group 4 answer key page covers how keys and challenges work in a large OMR exam.
Practice questions
Question 1. By what time and date must objections to these tentative keys be raised?
- A. 7 October 2026, 5.45 pm
- B. 10 October 2026, 11.59 pm
- C. 14 October 2026, 5.45 pm
- D. 19 October 2026, 5.45 pm
Question 2. How must a candidate raise an objection to a tentative answer key, according to the release?
- A. By registered post to the Commission
- B. By e-mail to the Controller of Examinations
- C. In person at the Commission's office
- D. Through the "Answer key Challenge" window on the Exam Dashboard
Answers
- C. The window is seven days from publication on 7 October, ending at 5.45 pm on 14 October 2026.
- D. The Commission says only that window can be used; post and e-mail objections are not accepted.
Source
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- Combined Technical Services ExamTNPSC Combined Technical Services Exam (CTSE) explained: the interview, non-interview and Diploma/ITI streams, 2026 planner dates, and how to prepare.
- Group 4 answer keyTNPSC Group 4 answer key for the 10 January 2027 exam: where keys appear, how to raise objections and how to calculate your score at 1.5 marks a question.
- Group 2 answer keyTNPSC Group 2 and 2A prelims answer key: where keys are published, how to raise objections and how to estimate your 300-mark prelims score from the key.
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