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Q.

Choose the wrong statement.

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a

electrical conductance of an electrolytic conductor increases with increase in temperature

 

b

 electrical conductance of a metallic conductor increases with increase in temperature

 

c

 electrical conductance of a metallic conductor decreases with increase in temperature

 

d

 degree of dissociation of an electrolyte increases with dilution

answer is B.

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Detailed Solution

Conductivity in metals is caused by the motion of free electrons. The vibration of metal ions increases with temperature. As a result, the metal becomes more resistant and loses conductivity. Ions are charge carriers in electrolytic conductors, and when temperature rises, ionisation rises as well, increasing conductivity.

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