Question 1:

Which process releases a large amount of energy through the splitting of atomic nuclei?

Explanation: The correct answer is A) Fission. Nuclear fission is the process in which the nucleus of an atom splits into two or more smaller nuclei, releasing a large amount of energy.

Question 2:

Which element is commonly used as fuel in nuclear reactors for generating electricity?

Explanation: The correct answer is A) Uranium. Uranium, specifically uranium-235, is commonly used as fuel in nuclear reactors for generating electricity through nuclear fission reactions.

Question 3:

What is the purpose of a moderator in a nuclear reactor?

Explanation: The correct answer is C) To slow down neutrons. A moderator in a nuclear reactor is used to slow down the fast-moving neutrons produced during fission, allowing them to be captured by other nuclei and sustain the chain reaction.

Question 4:

Which type of nuclear reactor design uses water as both the coolant and the moderator?

Explanation: The correct answer is B) Boiling water reactor (BWR). In a BWR, water acts as both the coolant and the moderator, allowing for the transfer of heat from the reactor core to produce steam for generating electricity.

Question 5:

Which of the following is not a potential concern associated with nuclear energy?

Explanation: The correct answer is C) Greenhouse gas emissions. Unlike fossil fuel-based power plants, nuclear power plants do not produce greenhouse gas emissions during electricity generation, making them a low-carbon energy source. However, radioactive waste disposal, the risk of nuclear accidents, and nuclear proliferation are valid concerns associated with nuclear energy.