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a
A - (i)(1) ; B - (ii)(2) ; C - (iii)(3)
b
A - (iii)(2) ; B - (ii)(3) ; C - (i)(1)
c
A - (ii)(1) ; B - (iii)(2) ; C - (i)(3)
d
A - (iii)(1) ; B - (i)(3) ; C - (ii)(2)
answer is B.
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Detailed Solution
[n tetragonal system two sides are equal but one is different. In it all the axial angles are 90o so, a=b≠c and α=β=γ=90∘In trigonal system, all the sides and axial angles are equal but not equal to 90o. i.e. a=b=c and α=β=γ≠90∘In monoclinic system, all the sides are unequal and one bond angle (axial angle) is not equal to 90o i.e.a≠b≠c and α=γ=90∘,β≠90∘