The candidates who appeared for the examination may now check their marked responses online at www.cpcb.nic.in, download the official copy of the Answer Key in PDF format, and verify the marking with the Solutions of the Question Paper.CPCB issued a response to various positions on 16th July 2025
CPCB wants candidates to verify their answers and be transparent during the recruitment process. This answer key will help candidates to know their performance and plan for the next stage.
CPCB Exam 2025 Key Details
The candidates appeared for the said exam of CPCB on the 21st and 22nd of June 2025 to fill a total of 69 vacancies, including those for Scientist B, Officer, Assistant Law Officer, LDC, among others. They must analyze the answer key given in detail, check their responses against the official answers, and estimate their marks.
Also read: JET Result 2025 Declared – Download Now
How to Download CPCB Answer Key 2025
For candidates to download the answer key for their detailed examination, they must access the official website, click on Jobs, click on the Recruitment Notice, click on CPCB Recruitment Portal, log in with their Email ID and Mobile Number, and finally download the answer key.
CPCB has made it easy. Follow these steps:
1. Go to the official website
2. Click on the “Jobs”.
3. Choose “Results and Recruitment News.”
4. Find Important Notice VI under Advt. No. 01/2025-Admin.(R).
5. Click the CPCB Recruitment Portal link.
6. Log in with your Email ID and Mobile Number.
7. Download your CPCB Answer Key 2025.
Save or print a copy for checking.
How to Raise Objections to the Answer Key
This is to ensure fairness and accuracy in result evaluation.
Submit your objections by the 17th July 2025 at 11:59 pm. After this date, CPCB will not accept any objections.
Steps for Raising an Objection:
Candidates need to log in using a valid Email ID while providing their mobile number for OTP verification. Answers should then be reviewed, questions for challenge should be selected, supporting documents should be attached, and fees should be paid while following the instructions involved in objecting.
1. Log in with your Email ID and Mobile Number.
2. View your question paper and answer key.
3. Click the Objection link below the question.
4. You can upload references or notes in a PDF file, which has to be less than 500 KB in size.
5. For each question that you will pay an amount of ₹1000, you can use a Debit or Credit Card or a check via Net Banking.
6. Confirm and submit your objection.
Objection Fee
- You need to pay ₹1000 per question. This is to ensure only serious objections are submitted.
- If CPCB accepts your objection after review, the fee will be refunded.
Important Guidelines for Objection Submission
The candidates should provide clear and valid references in support of their objections. Each question has to have one well-structured PDF upload, with specific details, and no stepping away from the procedure, all windows down, lest the entire process be in error.
- Submit one clear PDF per question.
- Use proper book references or notes.
- Don’t upload blurry or incomplete documents.
- Check details before submission.
- Plan to avoid last-minute errors.
What Happens After Objection?
They will accept valid challenges and correct the answer key if needed.
Once the review is done, CPCB will release the final answer key and then declare the results.
Selection Process After Answer Key
Candidates scoring above the cut-off marks shall proceed. The full selection process is:
- Written Exam (already done)
- Skill Test (for some posts)
- Interview
- Document Verification
Each stage is important, so candidates must prepare well.
Important Dates
All applicants should keep a track of every step of the recruitment process. They should track all the announcements through the official website and note all the important ones so that they can prepare for opposing them accordingly and not miss a deadline.
- Exam Dates: 21st and 22nd June 2025
- Answer Key Release: 16th July 2025
- Objection Deadline: 17th July 2025 (11:59 PM)
Final Advice to Candidates
Check the answer key carefully and raise objections if required.
Follow the instructions and meet the deadlines to succeed in CPCB recruitment.
Also read: IB ACIO Recruitment 2025: 3717 Vacancies, Apply Online
FAQS
Q1. Why should I check the Answer Key?
To verify your marked answers, identify mistakes and estimate your score before the results.
Q2. Will CPCB refund the objection fee?
CPCB will refund the fee if your objection is accepted after review.
Q3. How do I object?
Log in to https://onlineapp.iitd.ac.in, select the question, upload your PDF, pay the fee and submit.
Q4. What happens after I submit objections?
CPCB will review all objections, accept valid ones and release the final answer key before the results
