それは甘いですか、それともすっぱいですか。

that (indicating an item or person near the listener, the action of the listener, or something on their mind); it; that time; then; there (indicating a place near the listener); you

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

sweet-tasting; sweet; sugary; sugared; fragrant (smelling); sweet (music); lightly salted; light in salt; not spicy; naive; overly optimistic; soft on; generous; indulgent; easy-going; lenient; half-hearted; not finished properly; insufficient; not satisfactory; inadequate; loose; mild; tempting; enticing; luring

be; is

indicates a question (sometimes rhetorical); or; whether or not; some- (e.g. something, someone); indicates doubt, uncertainty, etc.; emphatic prefix; suffix forming adjectives or adverbs; in that way

or; or else

sour; acid