Fighting in the admission test

I think our present system of admission test is not correct. Most of the institutions take admission test based on MCQ. The answers to the questions are set in such a way that sometimes the students become confused and they cannot answer correctly. Sometimes, if luck favours, the answer of a student may be correct although he does not know the correct answer. But he answers the question only by assumption. Besides this, most of the universities take examination on several subjects. Suppose, a student wants to study in English. But he has to give examination on Bengali, general knowledge and in some universities on the other subjects of humanity group -- why is it necessary? I do not understand. I think the admission test should be taken subject wise.

Sometimes, for the limitation of seats and such system of admission test many students do not get a chance of studying in a public institution. So the number of seats should be increased and the system of admission test should be changed.