Question

What type of energy transformation occurs in a dry cell?
$\left( {\text{A}} \right){\text{Electrical}}\,{\text{to}}\,{\text{Thermal}}\,{\text{Energy}}$
$\left( {\text{B}} \right){\text{Chemical}}\,{\text{to}}\,{\text{Electrical}}\,{\text{Energy}}$
$\left( {\text{C}} \right){\text{Electrical}}\,{\text{to}}\,{\text{Light}}\,{\text{Energy}}$
$\left( {\text{D}} \right){\text{Potential}}\,{\text{to}}\,{\text{Electrical}}\,{\text{Energy}}$

Answer 1

Hint: A battery is a device consisting of one or more electrochemical cells and a dry cell is one of many general types of electrochemical cells. A wet cell and a dry cell are quite different from each other. It can operate in any orientation without spilling, as it contains no free liquid.

Complete step-by-step answer:
A battery contains electrochemical cells that can store chemical energy to convert to electrical energy.
A dry cell battery stores energy in an immobilized electrolyte paste, which minimizes the need for water. The best examples of dry cell batteries include zinc-carbon batteries and alkaline batteries.

Additional Information
The cell is made up of an outer zinc container, which acts as anode. The cathode is a central carbon rod, surrounded by a mixture of carbon and manganese dioxide. The electrolyte is a paste of ammonium chloride. A fibrous fabric separates the two electrodes, and a brass pin in the center of the cell conducts electricity to the outside circuit.
From the above discussion we conclude that dry cells are the device which convert the chemical energy to electrical energy. It generally occurs due to this construction and composition from which it is made up.
First of all the cell releases chemical energy from forming fuel oxygen chemical bonds, these bonds are made by positively charged fuel which migrate toward the negatively charged oxygen between the two terminals. Due to this migration of two charges some amount of energy is released while forming the bond to electrical energy resulting in potential difference across the terminals. This is how current flows through the cell by converting chemical energy to electrical energy.

So, the correct answer is “Option B”.

Note: Cells are quite complicated to understand. You need to focus on the key aspect of the cell and that is it is a type of electrochemical cell which allows current to flow through it and can operate in any orientation, which makes it suitable for portable equipment.