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Question

Column-I and Column-II contain four entries each. Entries of Column-I are to be matched with some entries of Column-II. One more than one entries of Column-I may have the matching with the same entries of Column-II.

List -I List -I
(i) Tetragonal and hexagonal (P)a=bc
(ii) Cubic and Rhombohedral (Q) α=β=γ
(iii) Monoclinic and triclinic (R) abc
(iv) Orthorhombic (S) a=b=c

Which of the following option has the incorrect combination considering List-I and List-II

A
iP
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B
iiiR
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C
iiQ
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D
ivS
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Solution

The correct option is D ivS
Crystal system Edge length

Axial angle

Tetragonal a=bc α=β=γ=90o
Hexagonal a=bc α=β=90o, γ=120o
Cubic a=b=c α=β=γ=90o

Rhombohedral

a=b=c α=β=γ=90o
Monoclinic abc α=γ90o, β90o
Triclinic abc αβγ90o
Orthorhombic abc αβγ90o

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