The electrical conductivity and melting point | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) An alloy is a homogeneous mixture of two or more metals or a metal and a non-metal.When an alloy is formed,the regular arrangement of atoms in the

Vedclass · Accepted Answer

Less than that of pure metal.

Vedclass · Answer

(D) An alloy is a homogeneous mixture of two or more metals or a metal and a non-metal.When an alloy is formed,the regular arrangement of atoms in the pure metal lattice is disrupted by the addition of other atoms.This disruption hinders the movement of free electrons,which are responsible for electrical conduction,thereby decreasing the electrical conductivity compared to the pure metal.Additionally,the presence of foreign atoms creates lattice distortions that require more energy to overcome during the phase transition from solid to liquid,which typically results in a lower melting point compared to the pure metal (though this can vary,the general property of alloys is lower conductivity and lower melting point than the base metal).

The electrical conductivity and melting point of an alloy is:

Similar Questions

Which of the following is not a use of sulfur?

Give reasons for the following:
$(i)$ Most metals conduct electricity well.
$(ii)$ The reaction of iron $(III)$ oxide,$Fe_{2}O_{3}$,with heated aluminium is used to join cracked machine parts.
$(iii)$ Sodium,potassium,and lithium are stored under oil.

Non-metals form two types of oxides. Choose these two types from the following oxides:
$SO_2, NO_2, CO, H_2O, N_2O$

State reasons for the following:
$(i)$ Metals are good conductors of heat.
$(ii)$ Addition of some silver to pure gold for making ornaments.
$(iii)$ Inability of non-metals to displace hydrogen from dilute sulphuric acid.

Which one of the following figures correctly describes the process of electrolytic refining?

Vedclass Test Series

Exam Paper Generator

Online Exam Module