It depends where and what kind of foul. Also what level
Dissent is not a foul, it is misconduct, and the consequence is a caution.
Yes there are fouls in U-10 soccer. A foul is a foul, no matter what age. Now fouls in U-10 soccer may not be on purpose like some of those in age groups above U-10, but they may be. Again though, a foul is a foul, no matter what the age.
Yes you can! But it's a foul.
kicking a goal
Yes it can. Intent is not a criteria used to judge whether a foul occurred or not.
It is a foul, and a direct free kick is given.
There is no such thing as disqualifying a foul in soccer. However, the referee may choose not to call a foul because it is trifling, because the referee is not certain that a foul was committed, or because the team offended by the infraction would gain an advantage by allowing play to continue.
do you mean like handball, offsides, foul?
No way!! That's called a foul!