Question:
In a nuclear reactor heavy nuclei is not used as moderators because
In a nuclear reactor heavy nuclei is not used as moderators because
Updated On: Apr 17, 2024
- They will break up
- Elastic collision of neutrons with heavy nuclei will not slow them down.
- The net weight of the reactor would be unbearably high
- Substance with heavy nuclei do not occur in liquid or gaseous state at room temperature.
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
The correct answer is (B) : Elastic collision of neutrons with heavy nuclei will not slow them down..
Was this answer helpful?
0
0
Top Questions on Nuclear Energy
- Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): Nuclear fission occurs rapidly in atomic bomb explosion and occur relatively slowly in a nuclear reactor.
Reasons (R): Nuclear reaction of splitting a massive nucleus into less stable and less massive nuclei with release of energy is nuclear fission.
In the light of the above Statements, choose the correct answer from the options given below:- CUET (PG) - 2023
- Environmental Studies
- Nuclear Energy
- Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Nuclear fusion occurs more rapidly in hydrogen bomb explosion, and occur continually in the Sun, releasing energy essential for the life on the earth.
Reason R: Nuclear reaction of less massive nuclei coming together to form less stable and more massive nuclei is referred as nuclear fusion.
In the light of the above statements, choose the correct answer from the options given below:- CUET (PG) - 2023
- Environmental Studies
- Nuclear Energy
- If the mass numbers of two nuclei are in the ratio 3: 2, then the ratio of their nuclear densities is :
- KEAM - 2021
- Physics
- Nuclear Energy
- A cyclotron is used to accelerate protons (\({}^1_1\text{H}\)), Deuterons (\({}^2_1\text{H}\)) and α-particles (\({}^4_2\text{He}\)). While exiting under similar conditions, the minimum K.E. is gained by
- KCET - 2020
- Physics
- Nuclear Energy
Questions Asked in KCET exam
- Ten identical cells each emf 2V and internal resistance 1Ω are connected in series with two cells wrongly connected. A resistor of 10Ω is connected to the combination. What is the current through the resistor?
- KCET - 2023
- Cells in Series and in Parallel
- The speed of sound in an ideal gas at a given temperature T is v. The rms speed of gas molecules at that temperature is vrms. The ratio of the velocities v and vrms for helium and oxygen gases are X and X' respectively. Then \(\frac{X}{X'}\) is equal to
- KCET - 2023
- Thermodynamics
- If \(p(\frac{1}{q}+\frac{1}{r}),q(\frac{1}{r}+\frac{1}{p}),r(\frac{1}{p}+\frac{1}{q})\) are in A.P., then p, q, r
- KCET - 2023
- Arithmetic Progression
- A stretched wire of a material whose Young's modulus Y = 2 × 1011 Nm-2 has Poisson's ratio of 0.25. Its lateral strain εl = 10-3. The elastic energy density of the wire is
- KCET - 2023
- mechanical properties of solids
- A metallic rod of length 1 m held along east-west direction is allowed to fall down freely. Given horizontal component of earth’s magnetic field BH = 3 × 10-5 T. The emf induced in the rod at an instant t = 2s after it is released is ( Take g = 10 ms-2 )
- KCET - 2023
- Faradays laws of induction
View More Questions