Q: Can we offer Salaah in half sleeve shirt?

Q: I am 20 years old and my dad has passed away. I live with my mother in Switzerland at my uncle house, Actually I am very worried about my work or job because whenever I try to search , some type of problem is created and I am going to be jobless. I don't want to be dependent on my uncle. My uncle always creates problems for me and my mum. Kindly give me some "wazifa" or "prayers " by which I could get rizq by the help of Allah, and I want to be dependent on Allah, not anybody else.

Q: Is it permissible for one to cross in front of people performing Salaah in the Musjid?

Q: When performing Salaah behind an Imaam, what should one recite in the standing posture? Will one have to recite Surah Faatiha and a Surah?

Q: Is it necessary for a woman to wait for the Azaan to be called out to perform her Salaah or can she perform her Salaah immediately when the time of Salaah sets in?

Q: How should a person perform salaah if he has a back problem? Can he sit on a chair and perform salaah? I was told that if he does not have a serious back problem and he performs salaah on a chair, his salaah will not be valid. Is this correct?

Q: Is it permissible for a person who is able to perform the entir​e salaah standing, together with making the ruku normally and performing sajdah on the ground, to sit on a chair and perform salaah?

Q: Will the salaah performed behind an Imaam who wears his trousers below his ankles be valid?

Q: Should we stop the work after listening to the adhan and prepare ourself for prayer?

Q: My father passed away. I want to ask that may I go to his grave as I don't have a husband, brother or son. To sum up I have no man in my family so is there any leniency in Islam?