Answer to Question #52249 in Physical Chemistry for vi

Question

A gas becomes liquid by _______________.
Melting
Sublimation
Condensation
Distillation
2 Crystal planes are represented by certain numbers known as __________
Milner indices
Miller indices
Braggs indices
X-ray indices
3 Which of the following elements, if doped into silicon, would give a p-type semiconductor?
Al
P
C
O
4 Which of the followings will not diffract X-rays?
Solid
Liquid
Gas
Crystal
5 Which of these is NOT true about semiconductors?
They are insulators under normal conditions
They conduct under normal conditions
They conduct when heated
Electrical conductivity increases with temperature
6 Surface tension is thought to be due to:
surface area trying to increase
molecules on the surface of the liquid are drawn inwards trying to minimize the surface area.
air absorbed on the surface
surface molecules having lower energy than bulk molecules