repeating salaah

Q: I made a mistake in one of the prayers but forgot to do sajdah sahw and got up. Later I remembered and then repeated the prayer. Should I perform sajdah sahw in the repeated prayer? 

Q: If I find out something in the corner of my eyes after finishing salah, do I have to repeat it? 

Q: Is it true that there is no jumma salah for women? If in the past I read jummah in jamat, do I have to repeat the salah?

Q:

1. If one finds his garment stained with blood, would he need to repeat his salah performed while wearing that garment? (bleeding due to shaving unneeded hairs and ghusl performed after that). Would his wudu be broken due to bleeding and will the clothes be considered napak? The stain was less thn an inch in all dimensions.

2. If the salaah needs to be repeated, would only the Fard salah be repeated or sunan and nawafil as well?

Q: Our imaam offered 3 rakahs instead of 4 rakahs in asr farz Salah and ended the salah. No one interrupted him for his mistake and all the people ended offering 3 rakahs, then people said it was only 3 rakahs completed so the imam repeated the 4 rakahs again and every body prayed 4 rakahs again.

My question is if a person is behind a imam in the above case and is aware that the imam has made a mistake can he individually continue the same Salah and complete it ?

Q: I needed to make fardh ghusal during a flight and I could not do ghusal. I could not find anything to do tayummum with. I made wudhu and prayed. Was that right or what should I have done?

Q: Some time ago, I did not know that I have to read salah with tajweed. So for like almost 5 years I read salah but did not follow the proper rules of elongation and madds. Do I have to repeat the salahs?

Q: If a wajib is left out in Fardh salah, Witr Wajib salah like dua e Qunoot or sunnat and nafl salah, is it compulsory to repeat the salah after the salah time has expired?

Q: A musaafir joined the zuhr salaah after the imam got up from ruku of the 4th rakaat. After the imam made salam the musaafir masbooq got up to complete his salah however he forgetfully read only 2 rakaats and made salam instead of completing 4 rakaats. Should he now repeat the whole 4 rakaats farz of zuhr or must he perform 2 rakaats qasr? 

Q: Do I have to repeat my Salaah if I find out scotchtape on my feet after immediately performing esha Salaah.