Find the perfect squares between $100$ and $150$

Find the perfect squares between $150$ and $200$

Is $56$ a perfect square? Give reasons?

Is $84$ a perfect square? Give reasons?

Is $108$ a perfect square? Give reasons?

Is $271$ a perfect square? Give reasons?

Is $240$ a perfect square? Give reasons?

Is $529$ a perfect square? Give reasons?

Does the following has one in its units place? Write yes or no.

${126}^2$