Hello,

You can access the below link to get free pdfs of H4 code to solve https://www.google.com/amp/s/medicine.careers360.com/articles/neet-question-paper/amp

Papers of various codes are also present in form of free pdfs to download and solve in the above mentioned link.

If you also want the solutions to the above questions you can visit them on this link- https://medicine.careers360.com/articles/neet-answer-key-code-h1-h2-h3-h4-h5-h6

I also recomment you to search for'H4 code papers' on youtube as you will get a lot of videos with detailed explanations of the answers to the questions in case you have any doubt in solving them.

All the Best!