True statements about electronics?

Question

Electronics

Hello!
Can someone please explain if I have chosen the right statements correctly?
Two tasks - two schemes. Each of them has 6 statements. Several must be selected.
The teacher said that my answers were incorrect, he did not give any feedback, which is not surprising. There is a possibility that he has an error, because. some classmates have the same answers. Who has a free minute, can you at least briefly explain what is wrong and why?

Exercise 1

Схема:

Утверждения:

Я все утверждения отметил верными (да, такое может быть в наших тестах)

Task 2

Схема:

Утверждения:

Верные утверждения: 2,3,5,6

Thanks in advance to everyone who responds
And I apologize for the pictures in this quality

Answer 1

And I apologize for the quality of the pictures.

It would be worth not to apologize, but to make some efforts to save the eyes of the respondents (since you are waiting for help from them). It took me a minute and a half to create what is placed below, without exaggeration. All the options you need for this are right in the viewer (FSIV).
Now about "correctly-wrongly".
For the first task - 1 answer is incorrect (contacts are not signals, they can only create them), the 2nd one is similar to the truth (if I understand the term "relative error" correctly), the 3rd one too (too lazy to count), answers 4, 5, 6 are correct.
For the second task - 1 answer is correct, the 2nd is incorrect (instead of 2NOT it should be NOT, at least such a notation was practiced during the years of my active work), the 3rd is incorrect (the supply voltage for many types of logic does not vary, it is actually fixed , and the noise immunity is determined by the value of the response threshold, which may or may not be related to the supply voltage), the 4th is incorrect (there is no inversion in the circuit), 5 and 6 are correct.