The physical and chemical properties of elements are the periodic function of their
Mass number
Atomic number
Quantum number
Avogadro number
Which one of the following is the process in which ore is heated in the absence of air?
Roasting
Calcination
Oxidation
Reduction
The horizontal rows in the periodic table are called
Rows
Periodic
Periodic table
Chalcogens
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 the fusible product formed when flux reacts with gangue during the extraction of metals?
Flux
Slag
Gangue
Ore
Which of the following is a homogeneous mixture of two or more metals fused together?
Alloy
Iron
Electrolytic reduction of Alumina is by
Oswald process
Contact process
Hall's process
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
The vertical columns in the periodic table are called.
Periods
Groups
Column
Which one of the following is used in dental filling?
Aluminium
Steel
Dental amalgams
Bauxite
