Physics - Study Mode

[#946] In a nuclear reactor, one of the following is used as a fuel.
Correct Answer

(B) Uranium

Explanation

Solution: The fuel that is used in a nuclear reactor to maintain a nuclear concatenation response is known as Nuclear fuel. These fuels are fissionable, and the most popular nuclear combustibles are radioactive elements such as uranium-235 and plutonium-239.

[#947] Alpha particle is the nucleus of an atom of
Correct Answer

(C) Helium

Explanation

Solution: Alpha particle is the nucleus of an atom of Helium.

[#948] In nuclear reactor, heavy water is used as
Correct Answer

(C) Moderator

Explanation

Solution: Moderator is required in a Nuclear reactor to slow down the neutrons produced during the fission reaction so that the chain reaction can be sustained. Heavy Water is an excellent moderator due to its high moderating ratio and low absorption cross section for neutrons.

[#949] Radioactive elements can be traced out in living cell through a technique called
Correct Answer

(C) Auto radiography

Explanation

Solution: Radioactive elements can be traced out in living cell through a technique called Autoradiography.

[#950] The radiant energy having lowest energy is
Correct Answer

(D) Microwave radiation

Explanation

Solution: The parts of the electromagnetic spectrum, arranged from highest energy to lowest, are gamma rays, X-rays, ultraviolet light, visible light, infrared light, microwaves, and radio waves.