Is it permissible for a person to give the Zakah(obligatory charity) to his daughter-in-law?
Yes, it is permissible for a person to give the Zakah to his daughter-in-law if she was poor, and wasn`t provided for sufficiently by whomever is obliged to provide for her.
What is the ruling on using bank cards such as Visa and MasterCard ?
It is permissible to use such cards in accordance with the following conditions : 1-The issuing body does not stipulate collecting interest upon late payments. 2-The merchant does not increase the price of the goods due to an increase in the commission collected from him by the card issuer.3-The purchased item(s) should not be gold , silver or currency in case the card is not covered
Is it incumbent on a family to provide for its old handicapped son and take care of him?
The family and relatives- e.g.brothers- of such a person are obliged to spend on him and take care of him if he didn`t have money of his own.
Is it permissible for a wife`s family to demand her husband to divorce her although she doesn`t want that?
It is forbidden for them to do that in case their daughter doesn`t want divorce unless there was a sin that continues as long as the marriage survives.