Answer: Option [C]The correct answer is Hydrolysis and oxidation. Weathering processes are divided into physical and chemical weathering. Physical weathering involves the breakdown of rocks and soils through the mechanical effects of heat, water, ice, or other agents.
Answer: Option [C]Orogenic movements are responsible for the formation of great fold mountain ranges of the world. Orogenic movements, also called horizontal earth movements, are slow movements of the lithospheric plates. When two plates push against each other, it causes the stratas to fold upwards which causes formation of mountains.
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Answer: Option [A]The correct answer is Four minutes. Each degree of longitude has a time difference of 4 minutes. So, if it's 12 o'clock in Greenwich (0 degrees), it's 12:04 o'clock in 1 degree meridian, and so on.
Answer: Option [C]Plutonic rocks are the igneous rocks formed at some depth in the earth’s crust. Intrusive, or plutonic, igneous rock forms when magma is trapped deep inside the Earth. Great globs of molten rock rise toward the surface.
Answer: Option [C]The correct answer is Granite and Gneiss.
Gneiss: Mineral composition varies from granite to gabbro.
Schists: mostly crystalline, include mica, talc, hornblende, chlorite, etc.
These rocks are oldest rocks [pre-Cambrian era] [formed about 4 billion years ago].
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