Q.

Indicate the correct statements:

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a

Conductivity cells have cell constant values independent of the solution filled into the cell

b

DC (direct current) is not used for measuring the resistance of a solution.

c

Kohlrausch law in valid both for strong and weak electrolytes.

d

The k decreases but λM and λE increase on dilution.

answer is A.

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Detailed Solution

Cell constant =ℓA=σκ=GσλM=1000KM,λN1000KNOn dilution G↓K↓M↓N↓  λM↑,  λN↑
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