Q.1/Say whether the following statements are true (T) or false (F). Select only: 1. Ice has crystallographic structure. 2. The term "mafic rocks" means presence of heavy minerals. 3. Convergence means meeting of two continental plates. 4. Piezoelectricity results from pressure action. 5. Orthorhombic system contains three unequal and perpendicular axes. 6. The color of mineral Hematite is same as its streak. Equivalents means rocks have same mineral composition but are differing in origin. Cleavage is present in some minerals. 8. 9. The Earth diameter is always constant 10. Kant theory depend on condensation concept.

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