Discussion Forum
Que.  Liquid crystals remained laboratory curiosity for 
a.  40 years 
b.  30 years 
c.  50 years 
d.  90 years 
Correct Answer:30 years

Que.  Liquid crystals remained laboratory curiosity for 
a.  40 years 
b.  30 years 
c.  50 years 
d.  90 years 
Correct Answer:30 years
