Atext which gives instructions on how to do something is what kind
of text?

Procedural Text. Definition: A procedural text is a text which gives instructions on how to do something.

Explanation:

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.