What evidence from the text gives you the impression that kovaloff is intimidated by his nose

We can find more than one.

Kovaloff pays attention to the Nose's hat and uniform.

"everything the uniform, the hat, and so on show that it is a state-councillor. how the deuce has that happened?"

Also, he is very careful when he tries to talk to the Nose; and he is clearly afraid, since he needs to find his courage to talk to the Nose:

"honourable sir," said kovaloff at last, plucking up courage

a. the scene is structured as a dialogue between two characters in their own informal language.

i think its a bad thing why? one word flood