Very small mercury batteries have been made
and used in a multitude of applications. Why
have they been replaced by other kinds of
batteries for most applications?
1. These batteries cannot generate enough
current for any modern devices.
2. Mercury is poisonous and difficult to dis-
pose of.
3. Though they may be made very small,
they are far too heavy to use in most applica-
tions.
4. Mercury has become far too expensive to
use in batteries.
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The answer to this question is 2. Hg is difficult to dispose of and it is toxic.
The correct answer is 2. Mercury is poisonous and difficult to dispose of.
Mercury batteries have indeed been used in various applications due to their small size and ability to provide stable voltage over a long period of time. However, they have been mostly replaced by other types of batteries for the following reasons:
1. While it is true that mercury batteries may not generate enough current for modern devices, this is not the main reason for their replacement. There are other battery technologies, such as lithium-ion batteries, that can provide higher currents and are better suited for the power requirements of modern devices.
2. Mercury is a highly toxic substance. It poses serious health and environmental risks if not handled and disposed of properly. This has led to an increasing concern about the use of mercury in consumer products, including batteries. To ensure the safety of individuals and the environment, many countries have restricted or banned the use of mercury in batteries.
3. The weight of mercury batteries is not a major concern compared to their toxicity. While they may be relatively heavy compared to some other battery types, their weight alone is not a significant factor in their replacement.
4. The cost of mercury is not the primary reason for the replacement of mercury batteries. The main driving force behind their replacement is the health and environmental concerns associated with mercury usage. However, it is worth noting that mercury has become more expensive as its production and use have been regulated due to its harmful effects.
In summary, the main reason for the replacement of mercury batteries is their toxicity and the associated health and environmental risks. Other battery technologies have emerged that can provide higher currents and meet the power requirements of modern devices without the use of hazardous substances like mercury.