Women covering themselves when leaving the home

Q:

1. Are the wrists and ankles part of a woman's awrah in front of non mahram men.

2. When a woman covers herself when leaving her home, is it forbidden for her to cover herself with colours which are bright? If it is forbidden then which colours will be regarded as bright?

3. Due to widespread sinning nowadays will it be prohibited for a woman to travel any distance without a mahram?

4. Is it permissible for a woman to cover her own hair in front of non mahram men by wearing a wig? If not then why?

5. When a woman covers her face in front of non mahram men, is it compulsory for her to cover her eyes by wearing a mesh fabric over her eyes or can she show both eyes or only one eye?

Interacting with a Qaadiyaani

Q: We have asked some people after some authentic proof if they are Qadiyaanis but they are denying it and saying that there is nothing like that but the person who told us about them is a very close blood relation. They are denying all of these. Now we are in a fix as to what to do. Whom should we believe?