81. Which of the following is an example of a non-foliated metamorphic rock? A. Slate B. Schist C. Marble D. Gneiss Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
82. What is the hardness of diamond on the Mohs scale? A. 9 B. 8 C. 10 D. 7 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
83. Which rock has angular fragments cemented together? A. Conglomerate B. Sandstone C. Breccia D. Shale Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
84. What term is used for the process of forming sedimentary rock from sediments? A. Melting B. Compaction C. Solidification D. Crystallization Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
85. Which mineral is commonly fluorescent under UV light? A. Gypsum B. Fluorite C. Quartz D. Calcite Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
86. Which type of igneous rock is formed from lava cooling on the surface? A. Gabbro B. Diorite C. Granite D. Basalt Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
87. Which mineral is the main source of aluminum? A. Fluorite B. Magnetite C. Bauxite D. Galena Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
88. What is the streak of chalcopyrite? A. Black B. Red C. Greenish-black D. Blue Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
89. What is the general term for solidified lava rock? A. Magma B. Tuff C. Extrusive rock D. Intrusive rock Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
90. Which property helps to distinguish galena from other minerals? A. Silica content B. High hardness C. Metallic luster and high density D. Vitreous luster Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
