The most abundant substance in rocks are Sulfates Carbonates Silicates Oxides Wh
ID: 909622 • Letter: T
Question
The most abundant substance in rocks are Sulfates Carbonates Silicates Oxides Which kind of rocks are formed by solidification of molten rock? Igneous Metamorphic Sedimentary Both b and c Which mineral is likely to be used in cement and wallboard? Oxides Silicates Sulfates Oxides Which of the following it the most abundant metal in the earth's crust? Magnesium, MG Iron, Fe Nickel, Ni Aluminum, AI Which of the following metals is recovered from sea water Magnesium Iron copper both b and c The chloralkali process uses electrolysis of aqueous sodium chloride to produce all but one of the following Cl2 NaOH H2 CO2 The main source of magnesium is Earth's crust hydrosphere atmosphere lithosphere Which metal is sufficiently concentrated in the oceans so that it is currently extracted commercial aluminum copper magnesium iron Which element is likely to occur free in nature? zinc silver iron leadExplanation / Answer
(1) silicates
(2) Ignesious rocks are produced by the solidification of molten rocks.
(3) Sulphates ( Gypsum - calcium sulphate hemi hydrate is used in cement and wall board)
(4) Aluminium , Iron (Top 4 most abundant elements in the earth crust are Oxygen, silicon, aluminium and iron respectively, out which aluminium is the most abundant metal in earth crust)
(5) Magnesium
(6) NaOH
(7) Hydrosphere ( magnesium is third most abundant element from sea salts after sodium and chlorine)
(8) Magnesium (out of four given)
(9) Iron (and silver also available in some extent)