Colleges in Ahmedabad

There are usually two ways, by taking CAT and then WAT/PI. For second one, if you have lived outside India for at least 18 months and are away during CAT examinations, you can apply to IIMA using your GMAT Score. There is separate process for that.

IIM Lucknow is behind IIM Ahmedabad, Calcutta and Bangalore in rankings.

It would totally depend on you. First of all you should identify your strong areas and your weak areas. This would only be done if you have evaluated your mock tests properly. Remember that the key to crack CAT is SPEED and ACCURACY. Hence it is important that you solve as many questions as possible correctly. And this would only come with practice. Hence in short, practice as much as you can.

Yes, there are several courses available for operations management. First year courses are compulsory courses and in you second year you can pick operations courses from a wide variety of courses offered. IIMA has one of the best in class Operations management area.