A naturally occurring substance that has a definite chemical composition is known as a Ore false Mineral true Soil false Land false Single Minerals that lie near the earth's surface are simply dug out by the process known as Quarrying true Drilling false Shaft Mining false Open Cast Mining false Single Non-metallic minerals like Limestone, Sandstone, Marble, etc. are found in the Metamorphic rocks false Igneous rocks false Sedimentary rocks true Weathered rocks false Single Which of the following is not a characteristic of minerals? They are created by natural processes false They have a definite chemical composition false They are inexhaustible true Their distribution is uneven false Single Which of these is NOT an example of how your community uses natural resources? chips and dip for watching a football game true water for a community swimming pool false gasoline for public transportation false trees to build furniture and houses false Single Which of the following statements is correct? All metals are ductile false All non-metals are ductile false Generally, metals are ductile true Some non-metals are ductile false Single An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be Calcium true Carbon false Silicon false iron false Single Food cans are coated with tin and not with zinc because? Zinc is costlier than tin false Zinc has a higher melting point than tin false Zinc is more reactive than tin true Zinc is less reactive than tin false Single What two elements make up water? Helium and Oxygen false Hydrogen and Oxygen true Helium and Carbon false Oxygen and Carbon false Single Aggregates are very important ingredients of concrete because provides structural stability false provide good finish false acts as a filler material false all of the above true Single