MEDIUM
Earn 100

State the energy conversions in a dry cell.

Important Questions on Electrochemistry

EASY
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
What is salt bridge? Give its two functions.
EASY
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
For a fuel cell, which statement is correct?
MEDIUM
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
What is the density of a solution of sulphuric acid used as an electrolyte in lead accumulators?
EASY
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
While giving labelled diagram of dry cell write reactions taking place at cathode and anode.
EASY
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
In a typical fuel cell, the reactants (R) and product (P) are :-
HARD
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
Draw a neat labelled diagram of a Dry cell and write the cell reactions taking place at both the electrodes. 
EASY
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
Which of the following statements regarding the Leclanche cell is TRUE?
MEDIUM
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
While charging the lead storage battery
EASY
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
In a hydrogen-oxygen fuel cell, the combustion of hydrogen occurs to
EASY
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
Which colourless gas evolves when NH4Cl reacts with zinc in a dry cell battery ?
EASY
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
Mercury cell gives a constant voltage of 1.35 V during its lifetime. Why?
EASY
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
A device that converts energy of combustion of fuels like hydrogen and methane, directly into electrical energy is known as:
EASY
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
In lead storage cell _____ works as electrolyte.
HARD
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
Draw a neat labelled diagram of lead storage cell and write the reactions taking place at both the electrodes during discharging of the cell.
HARD
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
Write chemical equations for charging and discharging of lead storage cell.
MEDIUM
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
Define fuel cell and write its two advantages.
MEDIUM
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

On charging of lead storage cell

EASY
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
The cathode reaction in the dry cell will be
HARD
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
Draw a neat labelled diagram of H2-O2 fuel cell. Write the reaction which occurs at cathode of the cell?
MEDIUM
Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells
Which among the following equations represents the reduction taking place in lead accumulator at positive electrode, While it is being used as a source of electrical energy?