I like windows phone. but android is very popular and popular apps run on it. will it also support on windows phone? may I find same apps on windows?

No you cant. Switch to android or IOS if you are not a business user and would like to enjoy all the apps

Windows and Android both are different operating system, android app will not work on windows and apps prepared in android environment will not support in windows. It is only possible if shell is provided in any operating system.

almost all android apps are free ,so u can enjoy each apps of your use ,,in windows most of the apps are not free ,some of the social apps does not  support windows  phone so you will be unable to connect with your friends who are using android,data transferring to an android phone is easier than windows ,,in windows phone you have to download zune payer in your laptop or PC for data transferring ,so you can not connect your phone to every one laptop for data transferring ,use of android is easier and simple  than windows :) hope you will buy now android :) 

it depends on the app you are looking for. Some developers create apps that can be used on multiple phones. For example whatsapp exist on all OS systems (android, IOS, windows etc..)