[firedamage]

What type of solutes is non-polar?can anyone tell me?

[Dan]

You need to read up on polarity if you don't understand it, check any textbook index for "polarity". This is a fundamental topic and the sheer amount of published information available makes a long explanation on the board unnecessary.

Or ask google

or maybe have a read here

If you have further more specific questions about polarity just ask.

[Xenophilius]

Polarity arises basically when the elements constituting the salt have high electronegativity difference. For more check out google.