Question

Mention two advantages of a dry cell.

Answer 1

Hint A dry cell is a portable electric battery that is used mainly in homes for flashlights, radios, remote controllers, and many other devices. It converts chemical energy into electrical energy like any other battery.

Complete Step by step solution
1. A dry cell is a portable battery. It has its electrolyte in a paste form. A common type of dry cell is a zinc-carbon dry cell. It uses ammonium chloride electrolyte in paste form. This avoids spillage or leakage of electrolyte from the cell. It can also be oriented in any direction, so this can be considered as one of the most important advantages of a dry cell.
2. Dry cells have high energy density or power stored to weight ratio. So they are of compact size which makes them easy to carry around which makes them one of the most common types of batteries found everywhere.

Additional information
Dry cell battery converts chemical energy into electrical energy. A dry cell was developed by Carl Gassner in 1886. There are two types of dry cells:
1. Primary
2. Secondary
Primary cells are those which cannot be recharged. Secondary cells are those which can be recharged and reused.
Examples of primary dry cells are zinc carbon cell, alkaline cell, lithium cell, mercury cell, silver oxide cell.
Examples of secondary dry cells are nickel-cadmium cell, lithium-ion cell, nickel-metal hydride cell.

Note
Other advantages of dry cells include:
1. The comparatively lower hazardous effect on the environment.
2. Easy availability of dry cells.
3. Dry cells are cheap compared to other cells.