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 a single compound or complex mixture of various compound, of metal which are formed in earth?
Ores
Minerals
Metals
Metalloids
Which of the following is expressed in carat?
Purity of gold
Purity of silver
Purity of platinum
Purity of diamond
Which of the following is a process of coating zinc on iron sheets by using electric current?
The vertical columns in the periodic table are called.
Periods
Chalcogens
Groups
Column
Which of the following is a homogeneous mixture of two or more metals fused together?
Alloy
Iron
Gangue
Flux
The earthy impurities associated with there ore is called
Slag
Metallaid
Which of the following is the fusible product formed when flux reacts with gangue during the extraction of metals?
Ore
The physical and chemical properties of elements are the periodic function of their
Mass number
Atomic number
Quantum number
Avogadro number
