The sentence, I don't know where is it, represents an error in word order.
1. probably where often formed a question.
2. probably because a noun clause was not recognized
My answer answer 1 & 2 are correct statements
2 is not correct. There's no noun clause there.
No, wait.
2 is correct; 1 is incorrect.
Hmmm, there's an indirect question in there, but no direct question. The indirect question is the noun clause.
Your answer is partially correct. Statement 1 is correct, as the word "where" often indicates a question about location. However, Statement 2 is not entirely accurate. The error in the given sentence is not specifically related to a noun clause, but rather to the incorrect word order.
To explain further, in a typical declarative sentence, the word order is subject-verb-object. For example, "I don't know where it is" would be the correct word order.
In the given sentence, "I don't know where is it," the word order is inverted. The subject "where" comes before the verb "is," which is incorrect in this case. In question formation, the word order is often inverted, but in this sentence, it is not a question. Therefore, the error lies in the incorrect word order.
So to summarize, the correct statements would be:
1. The usage of "where" often forms a question about location.
2. The error in the given sentence is the incorrect word order, not specifically related to a noun clause.