Questions

The photoelectric effect pointed to the particle properties of light, which had been considered to be a wave phenomenon. Particles like electron and protons have both particle like and wave like behavior. Thus, according to de Broglie, all the material particles in motion possess wave characteristics. Although the dual nature of matter is applicable to all material objects but it is significant for microscopic bodies only.

CST is not payable on outward freight (if charged separately) and outward insurance if property in goods passes to buyer at the time of despatch.

It means that Sale price does not include Freight charges will not attract CST when shown separately in they Invoice. But goods & freight show in one invoice CST will attractive.