Yes this is perfectly acceptable.
Yes, if the sentence following the question mark and closing speech marks is the start of a new sentence.
interrogative sentance
interrogative sentence
the kind of sentence that ask a question and uses a question mark
The sentence with the word 'why': Why do you ask this question?
Ask is always a verb. If ask is used at the beginning of a sentence then the sentence would be an imperative sentence/question. Ask Jon to stop the noise. This is an imperative question because there is no subject. The subject is implied/suggested. The subject is 'you'. (You) ask Jon to stop the noise.
That question can not be answed.....FYI that's not even a question at all....I am very good with writing but I don't know what your talking about or what your question is!!!! Sorry about that...
a word in a sentence used to ask a question
That is a kind of sentence called a question. This is a kind of sentence called a statement: Some people ask silly questions.
You ask a good question and you have your answer.
What is your favorite color?
If you are asking whether the words "Is this a question" make a complete sentence, yes-- but not a declarative sentence. They make a question, and they need a question mark at the end. A declarative sentence is just a statement of fact: "Yes, this is a complete sentence." But a question is where you ask someone about something: "Do you have any questions to ask me?"