If you plan well, you can avail a good amount of leave from your account.
The most number of days I have taken at a stretch is 30 days Earned Leave, which was approved without any difficulty. As per Leave Rules, Leave is not a matter of right. However, there are Government of India decisions that clearly state that an officer can’t be denied leave on a consistent basis.
So based on a combination of your boss, luck, work, charge, leave account balance and perseverance, you will get as many leaves as you want. :)