Observing purdah with ghair mahrams
Q: Must a male observe hijaab from the following?
(1) Ghair Mahrams that are past child bearing age.
(2) Ghair Mahram relatives that are past child bearing age.
(3) Ghair Mahrams that have mental illnesses.
(4) Ghair Mahram relatives that are married.
(5) Female Mahrams whose satr is exposed, like his mother, grandmother or aunt.
(6) His biological grandfather divorced his biological grandmother. The biological grandfather marries another women. Must hijaab be observed for this woman, the new wife of his biological grandfather?
(7) Female domestic workers in the home.