No, except at the beginning of a sentence because it is not a proper noun.
Actually yes. As Champagne is a recognised appellation for wine it is a proper noun for both the region and the wines.
Yes.
Yes, when referring to the title of the President of the United States, it should always be capitalized.
Yes, the word "Tuesday" is always capitalized because it is a specific day of the week.
Yes, the term "Hispanic" should be capitalized when referring to people of Spanish-speaking descent or origin. It is considered a proper noun in this context.
Yes, "I am" is typically capitalized because "I" is a pronoun and should always be capitalized in English.
No, circa does not need to be capitalized.
Yes, it should always be capitalized.
OK is always capitalized because it is way more formal and palightebdhdbfhrbdhjbvhfdbchvjfbfhjhjfbffhjhjcbjftjfdhdjdffdvdjfgrfdekjsbrgiurhduwjsnjkiuvtfesvfcdvs
No, the word "rif" is not always capitalized. It should only be capitalized if it is part of a proper noun or at the beginning of a sentence.
Yes it should always be capitalized.
Yes, America is always capitalized because it is a propernou n.
A common noun is capitalized only when it is the first word in a sentence. A proper noun is always capitalized. An acronym is always capitalized.
Yes, both Hindu and Hinduism should always be capitalized.