Hi Manisha,
SOACET consists of single three hour examination. It contains 50 objective type questions on physics, chemistry and mathematics.
The examination will be of total 150 marks with no negative marking. There are no further details mentioned online about the difficulty of the exam or elaborating the syllabus but with the eligibility criteria the paper must be similar to JEE mains. To get better idea on this I would suggest you to look for previous year paper since the exam will be conducted in may/ June of the year so you got ample amount of time to prepare.
Alll the best!
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile