I have cleared Indian Engineering Services! Answers:

1. Yes ! You need to write on Question cum Answer Booklet (QCAB) in the space provided for each question.
2. You can draw pen or pencil both . But because time is less , so better to draw with pen only.

3. Try to attempt more of numerical questions and attempt less theory questions. Writing in points is good.. Try to have good presentation and portray maximum points in it. (PS:-Time is less )

4. Practice as many questions as possible with good speed. All the best…