Hello Shubham

If you have a Windows operating system installed, open File Explorer or This PC.

Right click on This PC or Computer in the navigation pane and select Properties.

In the System information screen, find the System type entry. This will indicate what type of processor your device has.

If you do not have an operating system installed, you should refer to the documentation that came with the device. Most device and processor manufacturers also provide information regarding processor capabilities on their websites.

For other options and more information on Windows 7 visit the Windows 7 32-bit and 64-bit FAQ page or download and run the free Windows 7 Upgrade Advisor.

hope u like the answer 

have a charming day :-)