no dear ! i mean from every center around 20 peoples were shortlisted for A&SD branch ! you have to get good marks to make sure your selection for psychological test ! i will tell you about my test that i was sure that i answered correctly 80-90 IQ questions and my academic test was super excellent because out of 25 questions of GK, i answered all 25 correctly and i was just unsure about 2 mcq's from English portion. so you can conclude from this that how people do well in Initial test
Suggestion is to practice as much as you can for IQ and also strengthen your GK as well ! try to ask about GK mcqs from others in A&SD Branch because academics mcq's are always repeated !