I I am writing this post on behalf of rooting celkon campus A35K
The method which worked for me was ROOT GENIUS
Steps of the Root Genius method
1. Put your phone on USB Debugging mode (activate checkbox on Settings > Development options > USB debugging or Settings > Applications > Development > USB debugging). Development options can be hidden in your Android. If you want to show it you must go to Settings > About Phone > Built Number and tap on it 5-8 times.
2. Make sure the Android drivers for your phone or tablet are installed in your PC.
3 .Download ROOT GENIUS and Open Root Genius App on your Windows PC.
4 .Connect your Android device to your computer. Root Genius will detect your Android Device.
5.Click Root it button to ROOT your Android. Root Genius will automatically Root your Android phone or tablet and it will install the KingUser
App. Once the process is finished your Android phone or tablet will be rooted successfully.