When nitrogen dioxide is bubbled through a solution of potassium permanganate, the solution turns colorless. Which of the following statements is true?

Question

Question 3 options:

1) The test reveals that nitrogen dioxide is a colored gas.

2) The test reveals that nitrogen dioxide is chemically reactive.

3) Nitrogen dioxide dissolves in the solution of potassium nitrate to produce nitrogen monoxide.

4) The test reveals that nitrogen dioxide is a potential refrigerant.

5) Any gas bubbled through potassium permanganate solutions gives a colorless solution.

Answer 1

doesn't 2) make sense?