Date of sale of application forms for Polytechnic entrance exam in Assam? Important dates for same.

Q.1. Kindly to let me know the date issue or sale of Form for entrans exams in polytechnic in Assam?
Q.2. whether the form can be downloaded from the web site? Give web site add.
Q.3 The last date of submission of from.
Q.4. The date of entrans exams.