Question: A moderator [A]. absorbs neutrons [B]. does not absorb neutrons [C]. accelerates neutrons [D]. none of these Answer: Option B Explanation: No answer description available for this question.

Question: Nuclear reactors are used [A]. to produce heat for thermoelectric power [B]. to produce fissionable material [C]. to propel ships, submarines, aircrafts [D]. all of these Answer: Option D Explanation: No answer description available for this question.

Question: A moderator generally used in nuclear power plants is [A]. graphite [B]. heavy water [C]. concrete [D]. graphite and concrete Answer: Option D Explanation: No answer description available for this question.

Question: A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to [A]. slow down the speed of fast moving neutrons [B]. control the reaction [C]. reduce the temperature [D]. extract heat from nuclear…

Question: A fission chain reaction in uranium can be developed [A]. by increasing the contents of U235 [B]. by slowing down fast neutrons so that U235 fission continues by slow neutron [C]. both (a) and (b) [D]. none of these…

Question: An atom bomb utilises uncontrolled nuclear fission. [A]. True [B]. False Answer: Option A Explanation: No answer description available for this question.

Question: Each fission of U235 produces on the average __________ fast neutrons as a product of reaction. [A]. 2.46 [B]. 24.6 [C]. 246 [D]. 2460 Answer: Option A Explanation: No answer description available for this question.

Question: In natural uranium, the constituents of three naturally occuring isotopes are [A]. U234 = 0.006%, U235 = 0.712% and U238 = 99.282% [B]. U234 = 0.712%, U235 = 0.006% and U238 = 99.282% [C]. U234 = 99.282%, U235 =…

Question: A power plant giving least running cost of production of electrical power is [A]. steam power plant [B]. gas turbine power plant [C]. hydro electric power plant [D]. nuclear power plant Answer: Option D Explanation: No answer description available…

Question: Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has [A]. high neutron absorption cross-section [B]. low moderating efficiency [C]. high neutron scatter cross-section [D].…