Electrochemistry · Chemistry · COMEDK

Start Practice

MCQ (Single Correct Answer)

COMEDK 2023 Morning Shift
Assuming no change in volume, the time required to obtain solution of $$\mathrm{pH}=4$$ by electrolysis of $$100 \mathrm{~mL}$$ of $$0.1 \mathrm{~M} \...
COMEDK 2023 Morning Shift
For a cell reaction, $$A(s)+B^{2+}(a q) \longrightarrow A^{2+}(a q)+B(s)$$; the standard emf of the cell is $$0.295 \mathrm{~V}$$ at $$25^{\circ} \mat...
COMEDK 2023 Evening Shift
The Molar conductivity of $$0.05 \mathrm{M}$$ solution of $$\mathrm{MgCl}_2$$ is $$194.5 \mathrm{~ohm}^{-1} \mathrm{~cm}^2$$ per mole at room temperat...
COMEDK 2023 Evening Shift
If electrolysis of water is carried out for a time duration of 2 hours, how much electric current in amperes would be required to liberate $$100 \math...
COMEDK 2023 Evening Shift
Match the items in Column I with their description in Column II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-st...
COMEDK 2023 Evening Shift
When Lead Storage battery is in the process of getting charged which one of the following reactions takes place?
COMEDK 2023 Evening Shift
The reaction taking place in a galvanic cell is as given $$\mathrm{A}(\mathrm{s})+\mathrm{B}^{2+}\left(\mathbf{1} \mathbf{1} \mathbf{1 0} \mathbf{0}^{...
COMEDK 2022
What will be the emf of the following cell at 25$$^\circ$$C? Fe/Fe$$^{2+}$$ (0.001 M) | | H$$^+$$ (0.01 M) | H$$_2$$(g) (1 Bar) | Pt(s) $$E_{(F{e^{2+}...
COMEDK 2022
Calculate the molar conductance of 0.025 M aqueous solution of calcium chloride at 25$$^\circ$$C. The specific conductance of calcium chloride is 12.0...
COMEDK 2021
Given that molar conductances for Ba(OH)$$_2$$, BaCl$$_2$$ and NH$$_4$$Cl are 523.28, 280.0 and 129.8 $$\Omega^{-1}$$ cm$$^2$$ mol$$^{-1}$$ respective...
COMEDK 2021
The specific conductivity of a solution containing 1.0 g of anhydrous BaCl$$_2$$ in 200 cm$$^3$$ of the solution has been found to be 0.0058 Scm$$^{-1...
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
CBSE
Class 12