Class VIII

Rock which is composed of sand-sized pallets of calcium carbonate formed in shallow water is
  1. shelly limestone
  2. chalk
  3. oolitic limestone
  4. all of them
Granite is an
  1. sedimentary rocks
  2. metamorphic rocks
  3. igneous rocks
  4. morphic rocks
Fine grained calcium carbonate layer of rock formed from micro-organisms is
  1. Shelly limestone
  2. chalk
  3. oolitic limestone
  4. all of them
Obsidian is rich in
  1. silica
  2. iron
  3. cobalt
  4. calcium
Iron-rich igneous rock includes
  1. granite
  2. obsidian
  3. basalt
  4. all of them
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