For your reference, we have provided an IIT JEE OMR sheet 2008 pattern here. Use it to get acquainted with the IIT JEE test pattern. IIT uses a complex OMR test pattern for conducting their entrance exams. Besides, solving previous year's question papers would help you test your knowledge self-determine improvement areas.
Both Paper I and Paper II contain MCQs with four answer choices each. While most OMR based exams feature questions that only have one answer each, this is not the case with IIT JEE. In IIT JEE, students may have to select more than one answer options for some questions, to secure the full score for those questions.
Integer type questions are useful when the solutions or the answers to the questions are numerical in form.
Used for mathematics section of the paper.
Students are provided with at least ten options and a maximum of 99 options. A single column with ten rows containing digits from 0 to 9 is provided, if the answer is a single digit number.
If the answer is in double digits, there will be two columns with ten rows each, and each containing digits from 0-9, thus providing 99 possibilities.
Used when there are several sections for one single question.
The question will contain four to five rows, with 4-5 answer options each, in one matrix that represents one question.
Useful for question pertaining to passage comprehension or column matching.
The OMR sheet of IIT 2008 includes all these patterns. You can download the sheets here for practice purposes.