The questions aren't wrong, however the answer given could be wrong, I.E if someone asks "is talking to the opposite gender haraam" a person could answer "yes" without thinking about exceptions to the rule, for example you go to see your doctor and the person on reception is of the opposite gender so you have no choice but to mix/talk with the opposite gender. Then you're forced out of necessity in this situation. Another situation could be you're lost somewhere and need directions, the only person available is of the opposite gender, then in this situation you're also forced to talk with them out of neccessity, another situation could be, you have a question about the deen and there's no 1 around who will know the answer except a man, then you have to mix/talk with them in order to find out the answer to your question.
Another situation that comes to mind is when Ayesha RA was travelling with the army of the Prophet (saw) and she got left behind without anyone realizing, and a man who was lagging behind saw Ayesha, he didn't just walk past her and go "it's haraam for me to talk to her" he approached her and got off his camel and gave her his camel and then they carried on forward till they joined the rest of the army. And the hypocrites started spreading rumours that something happened between them, but he really had no choice, he couldn't leave a defenceless woman alone in the desert could he? He escorted her to safety out of neccessity.
So I think every situation is unique and should be judged according to its merits.
But examples of where it could be haraam could be, you're friends with a girl without need or reason, i.e you chat to each with each other without need or reason just for the fun of it, hang out with each other, go to the cinema together, these are all things that a woman shouldn't do with a non mehram because it's unecessary free mixing with the opposite gender without need or neccessity and could lead to fornication right?
But also, even in situations where it's a neccessity to talk with the opposite gender it can still lead to fornication, i.e you talk with a female receptionist because you have an appointment at the place she's working, and she starts flirting with you. So the best thing to do is to avoid it as much as you can and if you have any advances made towards you, run!!
Another example is the TV question, the answer would be, if you watch haraam stuff then it is haraam, but if you watch halal stuff then it's not haraam.