Statement 1 : NO is an acidic oxide while ${\mathrm{CrO}}_3$ is a basic oxide.

Statement 2 : Oxides of metals are generally basic and oxides of non-metals are generally acidic.

Both Statement 1 and Statement 2 are true .

 Statement 1 is true and Statement 2  is false.

 Statement 1 is false and Statement 2 is true.

Both Statement 1 and Statement 2 are false.