CBSE 12 TH CHEMISTRY - Online Test
Q1. Semi conductors have conductivity (in ) in the range of
Answer : Option C
Explaination / Solution:
They are in between conductors and insulators.
Q2. KCl.MgCl2.6H2O is a
Answer : Option D
Explaination / Solution:
KCl.MgCl2.6H2O is double salt.
Q3. Yellow colour of NaCl crystals in sodium vapour is due to
Answer : Option D
Explaination / Solution:
It’s a F center defect.
