Which of the following is not a nitro-derivative?

Give the $IUPAC$ name of the following compound.

What is a diazonium salt? Explain with suitable examples.

What is the number of primary amine molecules among the following compounds?
$(CH_3)_3N, (CH_3)_2NH, CH_3-NH_2, CH_3-CH(NH_2)-CH_3, C_6H_5NH_2, C_6H_5NHCH_3, (CH_3)_3C-NH_2$

Given below are two statements:
Statement $I$ : Aminobenzene and aniline are same organic compounds.
Statement $II$ : Aminobenzene and aniline are different organic compounds.
In the light of the above statements,choose the most appropriate answer from the options given below:

What type of amine is triaminobenzene?