Identify the correct statements:

Options

A. `wedge_(m)` increase with increase in temperature
B. `wedge_(m)` decreases with increase in concentration
C. Specific conductance increases with increase in concentration
D. Specific conductance decreases with increase in temperature

Answer

D

Explanation

On increasing the temperature: ionic mobility increases and thus `wedge_(m)` increase, so statement (A) is correct.
`wedge_(m)=(K xx 1000)/(M)`
`rArr wedge_(m) alpha 1/M`
`wege_(m)` decreases with Increasc in concentration. So statement (B) is correct.
As concentration Increases, number of lons per unit volume increasus. So (C) is correct. As temperature increases the ionic moblity increases so specific conductance increases. So, statement (D) Is incorrect.