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प्रश्न
An alloy is
विकल्प
an element
a compound
a homogeneous mixture
a heterogeneous mixture
उत्तर
a homogeneous mixture
Explanation -
An alloy is a homogeneous mixture of metals or metals combined with one or more other elements.
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संबंधित प्रश्न
The process by which sulphide ore is concentrated.
Why are the metals like Na, K, Ca and Mg never found in their free state in nature?
Define the terms gangue.
Which of the following metals can be obtained from haematite ore?
(a) copper
(b) sodium
(c) zinc
(d) iron
The metal which can be extracted simply by heating the cinnabar ore in air is:
(a) Zn
(b) Cu
(c) Al
(d) Hg
State why aluminium is extracted from its oxide by electrolysis while copper, lead, iron by reducing agents and mercury and silver by thermal decomposition.
Name the following:
Name two metals always find in combined state.
Heating an ore in a limited supply of air or in the absence of air at a temperature just below its melting point is known as ______.
Explain the concept of Calcination.
A mineral from which the metal can be extracted economically and conveniently is known as ______.
