Question

Select all possible problems associated with using nuclear fusion reactions as an energy source. Nuclear fusion occurs at temperatures of millions of degrees Celsius.Research reactors require more energy to maintain these temperatures than the energy the reaction produces.Nuclear fusion occurs at negative degree Celsius temperatures to create unstable reactions to use as an energy sourceIt is difficult to contain the fusion reaction under such extreme conditions.

Answer 1

Nuclear fusion as an energy source faces challenges such as immense energy requirements for maintaining the high temperatures needed for fusion, difficulties in containing the reaction, and the current lack of energy output exceeding input.

Step-by-step explanation:

Problems associated with using nuclear fusion reactions as an energy source are numerous due to the extreme conditions required for fusion. For a fusion reaction to occur, temperatures of about 15,000,000 K or more are necessary, which ionize atoms creating plasma. This process, which powers stars, requires intense temperatures and a method of containment that can withstand these conditions.

One of the main challenges is that currently, research reactors need more energy to maintain these extreme conditions than the energy produced from the reaction itself, making fusion energy not yet cost-effective. Additionally, the fusion process is difficult to contain and control. The neutrons produced during fusion can make materials within the reactor radioactive, adding another layer of complexity to safely harnessing fusion energy.

While fusion power has the potential for providing a significant amount of energy, there is still a large amount of research and development needed before it can become a viable large-scale power source. Lastly, the statement about nuclear fusion occurring at negative degree Celsius temperatures to create unstable reactions is incorrect since fusion requires extremely high temperatures.

Answer 2

`A,B\text{ and D}`

Step-by-step explanation:

Here, we want to select the possible problems with nuclear fusion

Nuclear fusion refers to a nuclear reaction wherein two or more daughter nuclei combines to give a larger nucleus

Let us look at the options one after the other to check which of them is correct

a) This is correct

The temperature accompanying nuclear reactions is millions of degrees celsius which are very high

b) This is Correct

This is the major reason why there are currently no nuclear reactors that use fusion to provide energy

c) This is wrong

They occur at very high temperatures. The nuclei need very high energy to send them into kinetic motion

d) This is correct

It is quite difficult to contain a fusion reaction due to the conditions surrounding it and that is one of the reasons why there are no commercial nuclear reactors that use fusion as an energy source