Qu Est Ce Que C Est

When exploring qu est ce que c est, it's essential to consider various aspects and implications. "Qu'est-ce que c'est?" vs "Qu'est-ce que c'est que ça?". I have seen both and am uncertain what difference there is. As far as I understand, both mean What's that? What is the difference?

Is either preferable, or is one of them slang? Additionally, why "qu'est-ce que c'est", why not only "qu'est-ce"?. This perspective suggests that, the phrase “qu'est-ce que c'est” is indeed strange, but very common and standard.

I would say that the reason is that in spoken French subject–verb inversions tend to be very rare (unless you don't care about being perceived as pedant). Moreover, people usually ask questions using “est-ce” as the only subject–verb inversion: Qu'est-ce qu'il y a ? What is the construction of "Qu'est-ce que c'est que cette chose-là?"?. The sentence is quite grammatical, although not of the highest language register.

Qu'est-ce que cette chose là? In this context, is the standard form, an expletive c'est may be added, mainly in spoken French. Can even be exaggerated to Qu'est-ce que c'est-y donc que c'est que cette chose-là, for playfulness. « qu'est-ce que » vs « quel », what is the difference?.

Additionally, for example: Que manges-tu ? Qu'est-ce que tu manges ? Quel (le) is an interrogative adjective, so it is followed by a noun (except in one case - see below): Quel film regardes-tu ?

BUT quel (le) (and not que) is used without a noun if the verb is "être": Quel est ton nom ? Quelle est votre question ? This perspective suggests that, quels sont ces bruits ? What does "c'est ça” mean? - French Language Stack Exchange.

What does "qu'est ce que c'est ça" mean? Moreover, i thought c'est and ça means the same thing "it", so I'm a little confused why do we need to repeat it twice. Furthermore, my teacher also said that we can use "qu'est ... Qu'est-ce que c'est que - French Language Stack Exchange.

to ask what something specific is. Is there any way around this construction, that is, is it possible to remove the final "que"? I saw the sentence, "qu'est-ce qu'un dîner sans vin?" and I also saw the sentence "qu'est-ce que c'est qu'un symbole?".