Which subquery cannot be executed by itself as a separate statement?

Which subquery cannot be executed by itself as a separate statement? Correct Answer Correlated

An uncorrelated subquery contains references to the values from the outer query. So, it is dependent on it. Therefore, a correlated subquery cannot be executed by itself as a separate statement.

Related Questions

X' executed a sale deed in favour of 'Y' on 1st January, 2002. Subsequently on 10th January, 2002, 'X' executed a sale deed in respect of the same property in favour of 'Z'. Thereafter the sale deed in favour of 'Z' executed on 10th January, 2002 was registered on 20th January, 2002. Whereas the sale deed in favour of 'Y' was registered on 30th January, 2002.
In the said case, by virtue of section 47