No, it is a common noun.
No, it shouldn't be capitalized.
No it shouldn't be capitalized.
no
No, but the names of individual languages are capitalized.
no
It should only be capitalized if it forms part of a title.
Yes... indeed it is!
No it is a common noun.
The word "not" is typically not capitalized in a title unless it is the first word, a proper noun, or part of a hyphenated word.
No, only the beginning letter of each new line is capitalized.
No, but it is just one word: saltpeter.
No, except if the word is used at the beginning of a sentence.