Usually students have problem remebering long answers. But there are ways to deal with this...No answer is too long to remeber as far as you are Focused. Following tips may definitely help you -
1. Understanding- Always understand the content in your own language and try explaining it to yourself. Do this untill you are able to answer questions in your own words. More important is the understanding rather than the script of the lesson. So Do Not Rote Learn, but rather Understand Your Answers.
2. Chunking- Look at this sequence of numbers: 2, 4, 7, 8, 6, 5, 9, 0, 8, 7.
Now close your eyes and repeat them out loud. How many did you remember? Did you get them all right? If you are like most people, you probably were not able to remember those 10 random numbers after only looking at them for a second or two. Remembering 10 digits is not impossible, however. Actually, most of us do it all the time.
So, how can our brain make the transition from a string of 10 random digits to something that we can repeat back with ease? Sometimes, without even realizing it, we use a short-term memory strategy called chunking.
Chunking is one way to make remembering relatively lengthy strings of information a little bit easier. It is particularly useful when we only need to remember something for a short period of time. As its name implies, chunking involves taking long strings of information like numbers or letters and grouping (or chunking) them into smaller, more manageable bits of information. So, if you broke that 10 digit string down into smaller chunks, you would only have to remember 2 groups of 3 digits and one group of 4 digits. This method is much easier than remembering a long string of 10 digits.
3. Taking Breaks- Continuous studying can exhaust your brain and hence cause you to forget some learned material. Therefore, after every one hour taking a short 10 minute break is advised.