Mirrors and polished metal can reflect light well. There might be some more examples though.
Dark colors, especially flat black do not reflect light well. Carbon Nanotubes are considered the worst for reflecting light.
Diamonds
Both mercury the metal and Mercury the planet reflect light quite well.
Yes. very well
glass ,mirror
Because it has a shiny & smooth surface which helps to reflect the light... Take an example of tree. A tree have a rough surface due to which light can be reflect. So All of this depends on the smoothness of surface.. :-)
Yes
Well, yes, if by "reflect very well" you mean "reflect like a mirror". White paper can have a fairly high albedo, though - referring to the percentage of light reflected.
No, but they DO reflect light very well.
glass
well the light and ya.mercury does it all. it simply shines the
Planets reflect light.