1. Can HPV can be transmitted by unprotected oral sex?
Yes, but it's not as likely as it is by vaginal or anal sex. The strains usually transmitted by oral sex are the strains that don't give you genital warts, so you may never know you have it.
Oral sex is generally lower risk for STDs than vaginal or anal sex is.
2. in what kind of sexual activities Hepatitis can be transmitted and what are the chances of a transmission?
does it pass easily for example in case of a condom break?
This depends on which strain of hepatitis you're referring to.
Hep A is transmitted only by fecal matter (poop). It is very rarely spread sexually, and if it is, it is via anal sex and rimming (mouth to anus).
Hep B is spread by unprotected vaginal and anal sex. In theory, it could be spread by oral, but most experts believe this has never happened. It is found it blood, vaginal secretions and semen. There is a vaccine for this. If you haven't been vaccinated, talk to your doctor.
Hep C is found only in blood and is very rarely transmitted sexually.
3. can one be cured from Hepatitis and HPV or is it a virus for all life?
is it true that some people can cure themselves from these diseases?
All 3 hepatitis strains can be cured, though some have hep B for life. HPV usually clears itself from your body within 2 years. If you think you have any of these, get medical treatment. Hep B can cause serious liver issues, so don't try at home treatments.
HPV is very, very common. It's estimated that about 90% will have it at least once in our lifetimes. Condoms offer significant protection, but not total protection. There is also a vaccine for this. Talk to your doctor if you haven't gotten it.