when i am post Article then so much time required to Approved article.

As Sam said, there are a few steps to the editing process. We want to make sure contents we publish are good quality and readable. 

Here is the list of our typical process:

1. Our editor reviews your word document file and looks for the Title
2. Make sure we don't have same title article already published
3. The check online to make sure if article contents are not copied from somewhere else (this takes time). If yes, we let the author know about this.
4. Conversion from Word doc to plain text (Word doc has too much crap). Convert images (time consuming process)
5. Then article is published in Plain HTML 
6. Message goes to Sam and then Same proof reads it, fixes grammar and makes it more readable.
7. Then Article goes live

Authors can help us by not publishing duplicate articles, copying contents and submit plain text/HTML through our Editor :).

Some days we get up to 30 articles and we have to reject some and doing all, it takes time. 

Cheers!

I am part of the problem. I do the final editing. I am at the other side of the world, literally, than India. So normally what happens is that someone in India sends me a list of articles; they are normally sent at the end of the work day in India, which is morning for me. Articles usually go "live" when I finish editing them.

I am trying to develop tools to help me edit. So I sometimes postpone editing while I work on the tools. I always finish my list of articles to be edited before the end of my day, which is the morning in India. I hope to be able to speed things up when I have my tools working the way I want them to.

I do not know how much work is done before they (the list) are sent to me. I think they have to do things such as create a description and ensure that the category is correct and other things. There is probably more work than we realize.

I mainly try to fix grammar. So I might change "why required so much delay for article approve" to "what causes the delay in getting article approval". I hope the changes are good for you. I hope it helps for the articles to be written in a manner that is more consistent with something that someone whose native language is English would write. There is a lot of excellent material in the articles and I hope that improving the grammer will make the articles even more useful.

I try to understand what the author is trying to say and when it seems to be unclear, I try to rewrite it so it is more clear. If I make a mistake then please let me know, but I really try to get it right. If I do not understand, then I might send the author a message. It will really help if you can reply and try to explain it. I do not always get responses from authors but I would prefer to not guess at what something means when it is not clear to me.

The important thing is just as Pravin says; things take time.