hi,

Isi has changes its mtech entrance test pattern this year, however according to previous years pca has 30 questions and for each right answer there is 4 marks allotted, and for not attempting answer 1 marks is allotted, for wrong input 0 marks is given according to previous years. this year pcb section has only 2 section one from computer science syllabus and another is bsc maths syllabus. however according to model question paper of isi , each of the section have 22-24 questions. you may follow the official website to get the overview of question pattern.

https://www.isical.ac.in/~admission/Syllabus-And-QP.html