NEET

The NEET Chemistry syllabus is segragated into Organic, Inorganic and Physical Chemistry chapters. The units covered in these three areas are given below.

Physical Chemistry

Unit I: Some Basic Concepts of Chemistry

Unit II: Atomic Structure

Unit III: Chemical Bonding and Molecular Structure

Unit IV: Chemical Thermodynamics

Unit V: Solutions

Unit VI: Equilibrium

Unit VII: Redox Reactions and Electrochemistry

Unit VIII: Chemical Kinetics

Inorganic Chemistry

Unit IX: Classification in Elements and Periodicity in Properties

Unit X: p-Block Elements

Unit XI: d and f Block Elements

Unit XII: Coordination Compounds

Organic Chemistry

Unit XIII: Purification and Charactisation of Organic Compounds

Unit XIV: Some Basic Principles of Organic Chemistry

Unit XV: Hydrocarbons

Unit XVI: Organic Compounds Containing Halogens

Unit XVII: Organic Compounds Containing Nitrogen

Unit XIX: Biomolecules

Unit XX: Principles Related to Practical Chemistry

Also Read: NEET Chemistry Syllabus With Chapter-wise Weightage

The responses marked on the OMR Sheet of NEET are scanned and uploaded on the official website of NTA. The responses marked are read and captured by the machines, which can sometimes lead to smudging of the responses. Therefore, there can be errors in the scanned copy of NEET OMR sheet. If a student finds any such error in their OMR sheet, they have the provision to challenge them. Candidates have to pay a processing fee of INR 200 per response challenged. The steps for challenging the OMR sheet of NEET are given below:

1. Go to the official website of NTA NEET
2. Login using the NEET application number and password or date of birth
3. Click on “OMR Challenge”
4. You will see the questions in sequential order
5. Select Question (s) for which you wish to challenge the Recorded Response.
6. Once you select any Question for Challenge, you will see three options under the column 'Candidate's Claim'.
7. If you wish to challenge this option, you may use the Options given in the 'Candidate's Claim' column.
8. After clicking your desired option, for Physics / Chemistry / Botany / Zoology for NEET (UG) - 2023, scroll down, 'Submit', and move to the next screen.
9. You will see a screen displaying your challenges.
10. Click on 'Submit' and Pay Fee Finally'.
11. Select Mode of Payment and Pay a processing fee of INR 200 for each question/grade challenged. Make payment through Debit/Credit Card/Net Banking/Paytm.
12. After successful payment, download/print the Answer Key challenge receipt

Along with the provisional NEET answer keys, NTA releases the NEET OMR sheets of the test takers. Candidates could download those from the official website of NEET. Candidates had to follow the steps given below to download the NEET OMR sheet:

1. Visit the official website of NEET, which is neet.nta.nic.in
2. Click on the link indicating NEET OMR sheet download
3. Enter the login credentials
4. Click on 'OMR Challenge' tab
5. Click on 'Click here to view your OMR Answer Sheet'
6. Check the scanned image of the answer sheet uploaded by NTA
7. Download and save the NEET OMR sheet for future reference

After downloading the NEET OMR sheets, candidates must check carefully whether it is in the same condition as the one they had submitted. In case there is any discrepancy, they can submit challenges or objections. In case there is no discrepancy, they can calculate their estimated scores by tallying their responses with the NEET provisional answer keys. 

Yes, NTA revised the NEET 2023 final answer keys based on the objections filed by candidates. The question and answer-wise changes are as follows:

In the NEET 2023 answer key released by NTA, it was stated that there were two questions, out of which one was dropped and another one had two correct answers. The questions are given below.

Q: The ratio of radius of gyration of a solid sphere of mass M and radius R about its own axis to the radius of gyration of the thin hollow sphere of same mass and radius about its axis is

(1) 3:5

(2) 5:3

(3) 2:5

(4) 5:2

NTA also stated that there is one question with two correct answer options. The question is given below:

Q: Main steps in the formation of Recombinant DNA are given below. Arrange these steps in a correct sequence.
A. Insertion of recombinant DNA into the host cell
B. Cutting of DNA at specific location by restriction enzyme
C. Isolation of desired DNA fragment
D. Amplification of gene of interest using PCR
Choose the correct answer from the options given below :
(1) B, C, D, A
(2) C, A, B, D
(3) C, B, D, A
(4) B, D, A, C