hiii
see if you want to take admission on polytechnic then you have to pass atleast your 10th class from any government recognise school.
you should have atleast 33% in your boards then you can take admission in polytechnic in mechanical, electrical, mining, CST or any branch of your choice.
the college will ask you for your medical certificate, anti-ragging certificate and your class 10th or 12th passing marksheet.
for more details plz visit
https://www.google.com/url?q=https://engineering.careers360.com/articles/polytechnic&sa=U&ved=2ahUKEwiEtsDjxvX4AhVeumMGHcMQBLIQFnoECAMQAg&usg=AOvVaw33PIITogq7DVuaXojeS-5Z
hope this is helpful for you.
best of luck
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