Electrochemistry — Important Questions
Maharashtra Board · Class 12 · Chemistry
45 important questions from Electrochemistry for Maharashtra Board Class 12 Chemistry, with answers. Written for the board exams 2027.
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Important Questions from Electrochemistry
Which of the following are functions of a salt bridge? (Select all correct answers)
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Maintains electrical neutrality, Completes the electrical circuit, Prevents mixing of solutions
Salt bridge serves three main functions: maintains electrical neutrality by allowing ion flow, completes the circuit for current flow, and prevents direct mixing of electrode solutions.
What happens to conductivity when an electrolytic solution is diluted?
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It decreases
On dilution, the number of ions per unit volume decreases even though total ions may increase due to increased dissociation. This results in decreased conductivity.
Which of the following are characteristics of strong electrolytes? (Select all correct answers)
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Almost complete dissociation, High conductivity, Linear variation of Λ with √c
Strong electrolytes show almost complete dissociation, high conductivity due to more ions, and linear variation of molar conductivity with √concentration (Kohlrausch law).
In a dry cell, what acts as the cathode?
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Graphite rod
In a dry cell (Leclanché cell), the graphite rod in the center acts as cathode where reduction occurs. The zinc container serves as anode.
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