Question

Which away these x- ray , sound waves, and radio waves can be polarized ?

Answer 1

Transverse waves have 2 components (electric E component, and a magnetic M component) these two components propagate at right angles to each other (i.e. it travels in two dimensions). Therefore it is possible to polarize transverse waves. Example electromagnetic waves. Hence, X rays can be polarised.
Sound waves in air travel parallel to the direction that the particles within it oscillate it therefore they are longitudinal in nature - it propagates in 1 dimensional direction so it can not be polarized.
radio waves can be polarized because they are transverse waves