Hello Abhijeet,
Chhattisgarh pre polytechnic exam is an exam which lot of people give so, I cannot tell you the exact figures of the attendance of this exam, but I can tell approximately there were around 1,00,000 to 1,15,000 students.
Hope this helps, if there is any other query then please comment.
Thank you,
All the best
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile