Difference of a burka, niqab, hijab, chador and Dupatta

Muslim women can be stylish and beautiful however; all of these style should meet the Islamic dress code.It does not only consist of a scarf that covers the head, the neck and the bosom; it also includes the overall dress that should be long and loose.

So, for instance, the combination of a tight, short sweater with tight-fitting jeans with a scarf over the head does not fulfill the requirements of the Islamic dress code.

Hijab is a general term referring to the practice of wearing veils of all kinds.
The different style is a cultural preferences

The burka covers the entire body including the whole face, with a mesh window for the woman to see out of.
The niqab covers the whole body including the face with the exception of the woman's eyes.
The chador is a full-length cloak worn by many Iranian women, typically held closed at the front by the wearer's hands or under their arms.
It is common in South Asia , most Muslim women wear dupatta is a long scarf draped across the head and shoulders, and is often accompanied by matching garments and also hijab to covers the hair and chest.

Edited from http://www.abc.net.au/news/2014-09-23/why-do-muslim-women-wear-a-burka-niqab-or-hijab/5761510