qadha salaah

Making tayammum and performing Salaah on a bus

Q: Once I was in bus and the asr time was running out and due to discharge coming out I did not have wudu plus I had to wash the area, so I thought I should go home then pray but time ran out, it became qada. In this case what should have I done? Is doing tayammum by the touching the bus seat where I don't see any sand but it should be there, is valid? While praying in the bus if the bus turns it direction, is my prayer valid? Should I open my face (for salah) in front of people?

Performing qadha salaah

Q: I started praying five times a day. Now I realize that I lost almost 25 years of praying. So according to this I was praying all this month but not regularly so Ramadan regularly praying almost praying for other days as well morning. Was it as well so I feel almost 10 years has been done now remaining 15 years prayers out there so I calculated for 15 years. So I need to clear 5475 pending prayers it is just an approximately figure please suggest advise me on this one

Making qadha for Salaah missed intentionally

Q: If a person misses zuhur salaah intentionally and it is time for asr. So can he make up zuhur prayer after asr or before asr?.I asked this to scholar and read on islamqa.com which says it is a difference of opinion. The most sound opinion is it is not permissible to make up as qazaa salaah. I see a lot of people in India making up missed prayer after the time has passed but I tell them it is not permissible and they argue. Please explain.