Чия це сумка?

this

Breakdown of Чия це сумка?

• чий: whose
• сумка: the bag

Questions & Answers about Чия це сумка?

Why is it чия and not чий, чиє, or чиї?

Because чия agrees with the grammatical gender and number of the noun сумка, which is feminine singular. The interrogative pronoun чий declines for gender/number:

• masculine: чий (e.g., Чий це телефон?)
• feminine: чия (Чия це сумка?)
• neuter: чиє (Чиє це вікно?)
• plural: чиї (Чиї це ключі?)

What is це doing here? Why not ця?

• це is a demonstrative pronoun used in identifying statements/questions, roughly “this is/it is.”
• ця is an attributive demonstrative meaning “this” used directly before a feminine noun: ця сумка = “this bag.”

So:

• Чия це сумка? = “Whose bag is this?” (standard, very common)
• Чия ця сумка? = also correct, more like “Whose is this bag?” with the bag explicitly identified as “this.”

Is Чия сумка? (without це) also correct?

Yes. Чия сумка? is perfectly natural and common, especially in short, context-heavy situations (e.g., pointing at a bag). Чия це сумка? is slightly more explicit when you’re indicating a particular object as “this.”