Nikaah & Marriage Issues

Q: Is the mahr of a non-virgin woman the same as a virgin?

Q: Is there any narration in regards to throwing kajoor in a nikaah? 

Q: Is it permissible for a pregnant woman to find out the gender of her baby.

Q: I wanted to know what does shariah say about a girl riding bicycle? Because my small daughter is insisting to buy one.

Q: I had zina with a girl (both of us are unmarried) right 1 hour before our Nikah, we didnt got time to take a bath and we completed our nikah like that only. Is my nikah valid or invalid? Should I have to do again nikah with her?

Important Note: The girl had zina with a person long time ago in her teenage years, in her past...and she repents it. After that I had married her. 

Q: Rs500 was given to a woman as her meher. What should she do with it after a divorce? Can she use it or must she give it to any poor person?

Q:

1. A man says to a woman,’Did You marry Rahim?’ The woman replies,’Yes’ in front of many people. Does it mean they are married?

2. A man says to a woman, ’Are you marrying Rahim?’ The woman replies,’Yes’ in front of many people. Are Rahim and the woman married?

Q: Is it necessary for the husband to give his wife an allowance?

Q: I am getting married to a woman who already has a daughter, from a previous marriage. Would I be a Mahram for this girl, because Allah says:

وربائبكم اللاتي في حجوركم من نسائكم اللاتي دخلتم بهن فإن لم تكونوا دخلتم بهن فلا جناح عليكم

Would it be ok for me to travel with this girl?

Q: There is a tradition when the bride's parents go to the groom's house for discussion, they leave the bride at home. The groom, his parents, bride's parents, everyone are present in the discussion related to marriage, except the bride. The bride is not even allowed to see her in laws house before marriage.

I feel all these rules are made by the society to deprieve a woman of her rights. Since it is her marriage, the bride should be allowed to be present during the discussions, just like the boy. And she should be allowed to see her in laws house before marriage, as she will be spending her entire life there. I am getting married soon, so I just want to know if visiting the groom's house with parents and taking part in discussions, will not be against Islam.