Question
Chemistry Question on The solid state
The liquid crystal method is applicable to locate avein in the body because
A
blood pressure of vein is enough high
B
temperature of vein is slightly lower than that of the skin
C
the electric field produced is sufficient to produce the polarity
D
geometry of haemoglobin molecule is likea liquid crystal.
Answer
temperature of vein is slightly lower than that of the skin
Explanation
Solution
The colour of a liquid crystal changes with temperature