Which of the following is a single compound or complex mixture of various compound, of metal which are formed in earth?
Ores
Minerals
Metals
Metalloids
Which one of the following is the process in which ore is heated in the presence of excess of air?
Roasting
Oxidation
Reduction
Calcination
The horizontal rows in the periodic table are called
Rows
Periodic
Periodic table
Chalcogens
Which of the following is a homogeneous mixture of two or more metals fused together?
Alloy
Iron
Gangue
Flux
Which one of the following is a method of coating ore metal with another by passing electric current?
Electroplating
Rusting
Galvanization
Smelting
Which of the following is the fusible product formed when flux reacts with gangue during the extraction of metals?
Slag
Ore
Which of the following is the process of extracting the ores from the earth crust?
Mining
Metallurgy
Smelling
Which one of the following is the process in which ore is heated in the absence of air?
The physical and chemical properties of elements are the periodic function of their
Mass number
Atomic number
Quantum number
Avogadro number
Which of the following is the most abundant metal in the earth's crust?
Au
Ag
Al
Cu
