I have an account on English Language and Usage and I asked two question from this account those has been removed and I can not see them in asked question column so I want to know what are the reason for removing those questions.
Two of your questions, https://english.stackexchange.com/questions/71686/difference-in-english and Difference in starting pronunciations of "station" and "sun" were deleted after having been closed. The first case was a question which was very broad, and your edits didn't make it less so. In the second case, your question didn't make much sense to other users because "station" doesn't start with an "e" sound. You later changed your question in comments, but did not actually update it in the five days since closing.
Deletion can happen to questions which have been closed (except usually for duplicate questions, which are more often merged). Like closing, deletion is done via a voting process.