CSIR IITR MTS Answer Key 2026 Out

CSIR-Indian Institute of Toxicology Research

CSIR IITR MTS Answer Key 2026 Released for 150 Marks OMR Exam

Download provisional question booklet answers and submit online representations through the official portal.

Official Portal: https://iitr.res.in/

The CSIR-Indian Institute of Toxicology Research (IITR) has officially released the tentative answer keys for the Multi-Tasking Staff (MTS) written examination held under advertisement number IITR/1/2026. Aspirants who appeared for the offline OMR-based test conducted on 12th September 2026 can now verify their recorded responses against the official answer keys issued for all four question booklet sets (A, B, C, and D). The department has also enabled an online objection management facility, allowing candidates to challenge any discrepancies by submitting valid justifications along with the prescribed fee before the final deadline of 15th September 2026, 05:30 PM. Candidates should carefully review every question to ensure maximum scoring accuracy before final results are compiled.

The release of the CSIR IITR MTS Answer Key 2026 marks a crucial milestone for all applicants who took part in the rigorous selection process. By cross-checking their marked responses against the officially published keys, candidates can estimate their aggregate scores and assess their qualification prospects. The examination was meticulously organized to maintain absolute transparency, featuring standardized question booklets distributed uniformly across all designated testing centers. Participants are advised to keep their login credentials handy to access the portal smoothly without facing last-minute technical glitches or delays during the active objection window.

CSIR IITR MTS Answer Key 2026 Overview

Exam Structure and Distribution

The OMR-based written test spanned a total duration of two hours (02:00 hours) at designated test venues. The question paper was categorized into four distinct parts designed to evaluate candidates across multiple subjects. Part I comprised General Intelligence with 25 questions, Part II evaluated Quantitative Aptitude through 25 questions, Part III tested General Awareness via 50 questions, and Part IV featured English Language containing 50 questions. Aspirants can evaluate their correct responses by matching their marked answers against sets A, B, C, and D published in the official response notification.

Understanding the comprehensive structure of the test helps candidates analyze subject-wise performance accurately. Each section carried specific weightage, contributing to the overall score of 150 marks. General Intelligence and Quantitative Aptitude tested analytical reasoning and numerical ability, whereas General Awareness and English Language measured general knowledge and linguistic proficiency. Aspirants must take note of their sectional accuracy to identify potential areas of improvement for future competitive examinations conducted under council guidelines.

Objection Submission Guidelines and Fee

Candidates who identify any error or discrepancy in the provisional answer keys can submit official objections online. A non-refundable processing fee of Rs. 100/- per questioned item is mandatory. Payment must be cleared exclusively through the QR code provided inside the online objection management portal. Any submissions lacking proof of payment, or accompanied by an insufficient fee amount, will be summarily rejected without further review. Refunds for fee payments made toward raised objections are strictly not permissible under any circumstances.

To ensure that only valid representations are processed, the institute mandates clear factual explanations backed by standard academic reference books or authenticated sources. Submitting unsubstantiated claims or duplicate entries will result in immediate disqualification of the objection. Candidates are strongly encouraged to complete the verification process well before the stipulated closing time of 15th September 2026 to avoid last-minute server congestion or network failure issues.

Step-by-Step Procedure to Raise Objections

Applicants wishing to challenge questions must adhere to the structured online workflow outlined by the institute:

• Navigate to the official recruitment portal via iitr.res.in/En/Recruitment.aspx.
• Log in using your registered mobile number, examination roll number, and registered email address.
• Transfer the requisite fee of Rs. 100/- per challenge using the portal’s integrated QR code.
• Input the generated transaction ID into the designated field.
• Upload the valid payment receipt in PDF, JPEG, or PNG format.
• Select your specific Question Booklet series (Set A, B, C, or D).
• Specify the question number along with accurate justification or factual reason.
• Verify all entered details and click on ‘Submit Objection’.

Question Booklet Sets and Final Evaluation

The notification explicitly covers answer keys for all four question booklet series, allowing seamless cross-checking for every participant. Once the objection window closes on 15th September 2026 at 05:30 PM, subject matter experts will review all valid representations. The final answer key will subsequently be compiled, superseding all provisional keys, and will form the definitive basis for processing the recruitment results.

Following the thorough evaluation of all submitted challenges by domain experts, the final merit list and cut-off marks will be prepared. Candidates are advised to monitor the official portal regularly for subsequent updates regarding the recruitment drive. Maintaining patience during this evaluation phase ensures transparency and fairness for every aspirant who appeared for the written examination.

Important Links Table

Frequently Asked Questions

Q1. When was the CSIR IITR MTS Answer Key 2026 released?
Ans. The answer key was officially issued on 12th September 2026.

Q2. What is the final date to submit objections for the MTS exam?
Ans. Objections must be submitted online by 15th September 2026 up to 05:30 PM.

Q3. What is the fee required to challenge a question?
Ans. Candidates must pay a non-refundable fee of Rs. 100/- per question.

Q4. Where can I download the CSIR IITR MTS Answer Key PDF?
Ans. You can download the answer key from the official website at iitr.res.in.

Q5. How many total questions were asked in the written examination?
Ans. The OMR-based test contained a total of 150 questions carrying 150 marks.

Q6. What credentials are required to log into the objection portal?
Ans. Candidates need their registered mobile number, exam roll number, and registered email.

Q7. Are question booklet sets available for all series?
Ans. Yes, tentative answer keys are provided for all four sets (A, B, C, and D).

Q8. What follows the tentative answer key stage?
Ans. After reviewing all objections, the final answer key and subsequent recruitment result will be declared.

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