Q 27 – Which of the following is not among the eight elements? (a) Oxygen and Silicon (b) Aluminium and Iron (c) Calcium and Sodium (d) Mica and Granite
Q 37 – Rocks that were originally either sedimentary, igneous, or metamorphic and have been changed further by heat and pressure are called: (a) Volcanic (b) Sedimented (c) Metamorphic (d) None of the above