The National Eligibility cum Entrance Test (NEET) UG 2025, conducted on May 4th, 2025, concluded with a wave of mixed emotions among lakhs of medical aspirants. While the final results are yet to be declared, discussions regarding the difficulty level of the paper have already taken center stage. A particularly interesting point of debate this year is around the different question paper codes 45, 46, 47, and 48 introduced in numeric form for the first time.
This article provides a detailed, early analysis of which NEET 2025 exam code might have been the hardest, based on initial student feedback and expert reviews. Please note that the observations made here are preliminary, and final difficulty confirmation can only be made post the release of official NTA data.
NEET 2025 Exam Overview
Before diving into the toughest code analysis, let’s first understand the overall picture of NEET UG 2025:
| Aspect | Overview |
| Exam Date | May 4, 2025 |
| Exam Mode | Offline (Pen and Paper) |
| Number of Questions | 200 questions (180 to be attempted) |
| Subjects | Physics, Chemistry, Biology (Botany + Zoology) |
| Paper Codes Introduced | 45, 46, 47, 48 |
| Result Status | Awaited |
The new numerical coding pattern 45, 46, 47, 48 has drawn attention, with students attempting to determine if one set was inherently more difficult than others.
NEET UG 2025 Final Answer Key Official PDF
| NEET Answer Key 2025 | Question & Answer | Answer Key and Solutions PDF |
|---|---|---|
| NEET Answer Key 2025 Code – 45 | Download PDF (English) | Download PDF (English) |
| NEET Answer Key 2025 Code – 46 | Download PDF (English) | Download PDF (English) |
| NEET Answer Key 2025 Code – 47 | Download PDF (English) | Download PDF (English) |
| NEET Answer Key 2025 Code – 48 | Download PDF (English) | Download PDF (English) |
NEET 2025 Answer Key PDFs – Subject-Wise Downloads (All Codes)
Here are the subject-wise answer keys for each NEET paper code. Download the PDFs for Physics, Chemistry, and Biology and verify your responses.
| Code | Physics PDF | Chemistry PDF | Biology PDF |
|---|---|---|---|
| Code 45 | Download Now | Download Now | Download Now |
| Code 46 | Download Now | Download Now | Download Now |
| Code 47 | Download Now | Download Now | Download Now |
| Code 48 | Download | Download | Download |
Overall Difficulty Level of NEET 2025
Across all paper codes, NEET 2025 was largely seen as tougher compared to NEET 2024, especially due to:
- Physics being heavily numerical and concept-based.
- Chemistry offering a blend of moderate and tricky questions.
- Biology remaining relatively easy but lengthy and detailed.
Subject-wise Difficulty
| Subject | Overall Difficulty (Across Codes) |
| Physics | Difficult |
| Chemistry | Moderate to Tough |
| Biology | Easy to Moderate (Lengthy) |
Physics emerged as the primary hurdle for most aspirants, influencing the perception of difficulty for each paper code.
NEET 2025: Why Students Found It Tougher
Several factors contributed to the general perception that NEET 2025 was tougher:
- Increased Calculation in Physics: Numerous numerical problems requiring significant time.
- Conceptual Depth: Less rote memorization; more conceptual application required.
- Time Constraint: Lengthy paper within a strict timeline.
- Unexpected Question Patterns: More multi-statement, match-the-column, and assertion-reason types in Biology and Chemistry.
These challenges were reportedly consistent across all codes, though some slight variations did exist, influencing which code was perceived as the toughest.
Code-wise Difficulty Analysis: Which Set Was Toughest?
Based on initial feedback and coaching institute reviews, here’s a comparison of the difficulty levels across NEET 2025 codes:
| Subject | Code 45 | Code 46 | Code 47 | Code 48 |
| Physics | Very Tough | Tough | Tough | Tough |
| Chemistry | Moderate to Tough | Moderate | Moderate to Tricky | Moderate |
| Biology | Moderate (Lengthy) | Easy to Moderate | Easy to Moderate | Easy to Moderate |
| Overall Difficulty | Highest | High | High | High |
Initial Verdict:
- Code 45 is emerging as the potentially toughest paper overall, mainly because Physics questions were exceptionally lengthy and calculative, and Chemistry included a challenging mix of theory and numericals.
Detailed Subject-Wise Analysis Across Paper Codes
Physics
Physics has been unanimously agreed upon as the toughest section, irrespective of the code. However, slight variations were observed:
- Code 45 reportedly had the maximum number of complex numerical problems.
- Topics like Optics, Electrostatics, Gravitation, and Modern Physics dominated the section.
- Time management became a major challenge due to the lengthiness and calculation involved.
Physics Focus Areas
| Key Topics | Nature of Questions |
| Optics | Lengthy Numerical |
| Modern Physics | Conceptual Application |
| Electrostatics | Complex Problem Solving |
| Mechanics | Calculation Intensive |
Among all codes, Code 45 Physics was particularly time-draining, causing students to rush through the latter sections.
Chemistry
Chemistry presented a mixed bag:
- Code 45 and Code 47 seemed to have a slightly tougher set with more conceptual traps in Organic and Physical Chemistry.
- Code 46 and 48 were perceived to be relatively more manageable.
NEET Chemistry Focus Areas
| Branch | Code 45 | Code 46 | Code 47 | Code 48 |
| Physical Chemistry | High Weightage | Moderate | Moderate | High Weightage |
| Organic Chemistry | High Difficulty | Moderate | High Difficulty | High Difficulty |
| Inorganic Chemistry | Lower Weightage | Higher Weightage | Lower Weightage | Lower Weightage |
Biology
While Biology was considered the easiest of the three subjects, it was far from effortless:
- Students across all codes struggled with long, multi-layered questions.
- Match the following, Assertion-Reason, and Statement-based questions were frequent.
- Strong NCERT-based knowledge was crucial to navigating this section successfully.
Biology did not vary significantly across codes in terms of core difficulty but Code 45 Biology had a few more assertion-reason questions, slightly adding to the time pressure.
Expert Opinions on NEET 2025 Toughest Code
Early expert consensus suggests that Code 45 might have been the most demanding set overall, particularly due to Physics and Chemistry sections. Aakash Institute: Highlighted the toughness of Physics across all sets, but mentioned Code 45 might have had slightly more lengthy calculations.
Will NEET 2025 Cutoffs Be Affected?
The higher overall difficulty level of NEET 2025, especially in Physics, is likely to influence cutoff trends:
- Possible Lower Cutoffs: Due to tougher papers, expected cutoffs may dip slightly compared to NEET 2024.
- Category-Wise Trends: OBC, SC, and ST cutoffs might also reflect minor drops.
However, since NEET UG is conducted in a single session, there will be no normalization across codes. All candidates are evaluated on an absolute scale.
Importance of Official NTA Data
While initial analyses provide valuable insights, the final confirmation regarding which code was the toughest will depend on:
- Official performance statistics shared by the NTA.
- Subject-wise and set-wise performance analytics, if released.
Until then, aspirants should treat all code-based difficulty discussions as preliminary and avoid undue stress.
Conclusion
In summary, based on early reports and student feedback:
- NEET 2025 was tougher overall compared to previous years, largely because of Physics.
- Code 45 appears to be the most challenging set, especially for Physics and Chemistry.
- Biology remained lengthy but fairly manageable across all codes.
With NEET 2025 results yet to be announced, candidates are advised to stay updated through official NTA communications and focus on post-exam procedures calmly. Remember, what matters most is your overall percentile and rank, not the perceived toughness of any particular code.
Stay positive and keep an eye out for updates. Best wishes to all NEET 2025 aspirants!
NEET Toughest Code Analysis 2025: Which NEET Exam Code Was the Hardest? FAQs
Q 1: Everyone’s saying NEET 2025 Physics was tough. Was it equally hard in all the question paper sets (codes 45, 46, 47, 48)?
Answer: Most early reports suggest Physics was tough across all the NEET 2025 question paper codes. However, the exact types of hard questions or how many there were might have been slightly different in each code.
Q 2: I got code 47, and the Chemistry felt really tricky. Did students with other codes feel the same about Chemistry?
Answer: Many students felt Chemistry in NEET 2025 was medium to hard overall. Some early feedback suggests that the balance of easy and tricky Chemistry questions, or the focus on certain topics, might have varied a little bit between the different codes.
Q 3: Biology was long! Was it longer or harder in some codes compared to others?
Answer: The length of the Biology section seems to have been a challenge for most students, no matter which code they had. It’s less likely that the actual Biology concepts were harder in one code, but maybe some codes had more of those long, multi-part questions that take more time.
Q 4: So, is there one code that most people think was definitely the hardest out of 45, 46, 47, and 48?
Answer: Based on the first reactions, some people think Code 45 might have been the hardest overall. This is mainly because Physics seemed very tough in that set. But we need to wait for more detailed analysis from experts to be more sure.
Q 5: If I got a question paper code that turned out to be harder than the others, will the NEET scores be adjusted to make it fair?
Answer: Usually, for NEET, which happens in one session, they don’t adjust scores based on which question paper code you had. The final ranking is based on your raw marks compared to everyone else who took the exam.











