The square of numbers may end with any one of the digits 0, 1, 5, 6, or 9. Also, a perfect square has even number of zeroes at the end of it.

**(i) 1057** has its unit place digit as 7. Therefore, it cannot be a perfect square.

**(ii) 23453** has its unit place digit as 3. Therefore, it cannot be a perfect square.

**(iii) 7928** has its unit place digit as 8. Therefore, it cannot be a perfect square.

**(iv) 222222** has its unit place digit as 2. Therefore, it cannot be a perfect square.

**(v) 64000** has three zeros at the end of it. However, since a perfect square cannot end with odd number of zeroes, it is not a perfect square.

**(vi) 89722** has its unit place digit as 2. Therefore, it cannot be a perfect square.

**(vii) 222000** has three zeroes at the end of it. However, since a perfect square cannot end with odd number of zeroes, it is not a perfect square

**(viii) 505050** has one zero at the end of it. However, since a perfect square cannot end with odd number of zeroes, it is not a perfect square