Indicate whether the following statements are True (T) or False (F).
1. $\sqrt{3}$ is a rational number
2. -17 is an integer
3. 2 is a real number
4. $\pi$ is a real number
5. $\frac{3}{2}$ is an integer
6. 0 is a natural number
7. $\sqrt{49}$ is a rational number