NEET Chemistry The Solid State Questions Solved


A body centred cubic arrangement is shown : O is the body centre; A, B, C, D,......., H are the corners. What is the magnitude of the angle AOB ?

(A) 120°                                 

(B) 109°28'

(C) 104°31'                           

 (D) 70°32'

(D). AO=OB=32a=l

 a2=2l2-2l2cosθ

a2=2l21-cos θ

a2=32a21-cosθ

 1-cosθ=23

cosθ=13,   θ=70°32'

Difficulty Level:

  • 24%
  • 45%
  • 13%
  • 20%
Crack NEET with Online Course - Free Trial (Offer Valid Till August 28, 2019)