Electrochemistry (Chapter Test - Non-Medical) - Class 12 MCQ

Solubility of a sparingly soluble salt S, specific conductance K and the equivalent conductance Δ₀ are related
as

A galvanic cell is composed of two hydrogen electrodes, one of which is standard one. In which of the following solutions should the other electrode be immersed to get maximum e.m.f. ?

A 250 mL sample of a 0.2 M Cr³⁺ is elecrolysed with a current of 96.5 amp. If the remaining concentration of
Cr³⁺ ions is 0.1 M, the duration of electrolysis is

A solution of 50 moles of NaOH in 1 m3 solution offered a resistance of 50 ohm using a cell of cell constant 100 m^—1. Molar conductance of the solution is

A 4.0 molar aqueous solution of NaCl is prepared and 500 mL of this solution is electrolysed. This leads to
the evolution of chlorine gas at one of the electrodes. The total number of moles of chlorine gas evolved is

The conductivity of 0.25 M solution of a weak electrolyte XY is 0.0125 S cm^—1. of the electrolyte
is 500 S cm² mol^—1. The dissociation constant of the electrolyte is

The standard electrode potential of Ag+ / Ag is + 0.80 V and of Cu²⁺ / Cu is + 0.34 V. These electrodes are
connected through a salt bridge and if

The conductivity of a 0.05 M solution of an electrolysis at 25⁰C is 2 x 10^—3 S cm^—1. The molar conductance of the  solution is (in S cm² mol^—1)

Limiting molar ionic conductivities of A⁺ and B^2— ions are 55 and 75 S m² mol^—1 respectively. What is the molar conductivity of the compound formed between A⁺ and B^2—, at infinite dilution ?

While charging the lead storage battery ........

The overall reaction of a hydrogen-oxygen fuel cell is

Match the column I with column II and mark the appropriate choice. 

Q.

Q.

Which of the following is most suitable in locating the end point in the above titration ?