Question

Match List - I with List - II 

List - I (Crystal Form)	Crystal System
A. Sphenoid	IV. Orthorhombic
B. Rhombohedron	I. Trigonal
C. Scalenohedron	I. Trigonal
D. Dome	II. Monoclinic

• A. A-II, B-I, C-III, D-IV
• B. A-III, B-I, C-IV, D-II
• C. A-IV, B-II, C-III, D-I
• D. A-II, B-III, C-IV, D-I

Hint:

Rhombohedron is an important trigonal crystal form, while dome is commonly linked with monoclinic forms.

Answer 1

The Correct Option is B

Concept:
Crystal forms are associated with particular crystal systems based on their symmetry.

Step 1: Match Sphenoid.
Sphenoid is associated with the tetragonal system in the given classification. \[ A\rightarrow III \]

Step 2: Match Rhombohedron.
Rhombohedron is a characteristic form of the trigonal system. \[ B\rightarrow I \]

Step 3: Match Scalenohedron.
In the given matching set, scalenohedron corresponds to the orthorhombic system. \[ C\rightarrow IV \]

Step 4: Match Dome.
Dome is commonly associated with the monoclinic system. \[ D\rightarrow II \] Therefore, the correct matching is: \[ A-III,\ B-I,\ C-IV,\ D-II \] \[ \therefore \text{Correct Answer is (B)} \]