For economical operation of a nuclear plant Coolant should be employed Used fuel should be reprocessed Moderator should be used Control rods should be used TRUE ANSWER : ? YOUR ANSWER : ?
The mass number of a substance represents the sum of total number of Neutrons and electrons in an atom Protons and neutrons in a nucleus Protons and neutrons in an atom Protons and electrons in an atom TRUE ANSWER : ? YOUR ANSWER : ?
Nuclear reactors are used All of the listed here To propel ships, submarines, aircrafts To produce heat for thermoelectric power To produce fissionable material TRUE ANSWER : ? YOUR ANSWER : ?
Isotopes of same elements have Same chemical properties but different atomic numbers Same atomic number and different masses Different masses and different atomic numbers Different chemical properties and same atomic numbers TRUE ANSWER : ? YOUR ANSWER : ?
In the breeder reactors the generation of new fissionable atom is At a higher rate than the consumption At the lower rate than the consumption Depends on other considerations At an equal rate of the consumption TRUE ANSWER : ? YOUR ANSWER : ?
A nuclear unit becoming critical means Chain reaction that causes automatic splitting of the fuel nuclei has been established It is generating power to rated capacity There is danger of nuclear spread It is capable of generating much more than rated capacity TRUE ANSWER : ? YOUR ANSWER : ?
The most commonly used moderator in nuclear plants is Graphite Concrete and bricks Graphite and concrete Heavy water TRUE ANSWER : ? YOUR ANSWER : ?
The material most commonly used for shielding is Concrete All of these Carbon Lead TRUE ANSWER : ? YOUR ANSWER : ?
In natural uranium, the constituents of three naturally occurring isotopes are U₂₃₄ = 0.006%, U₂₃₅ = 0.712% and U₂₃₈ = 99.282% U₂₃₄ = 0.006%, U₂₃₅ = 99.282% and U₂₃₈ = 0.712% U₂₃₄ = 0.712%, U₂₃₅ = 0.006% and U₂₃₈ = 99.282% U₂₃₄ = 99.282%, U₂₃₅ = 0.006% and U₂₃₈ = 0.712% TRUE ANSWER : ? YOUR ANSWER : ?
The percentage of carbon in bituminous coal is in the order of 65-80% 20-40% 50-65% 30-50% TRUE ANSWER : ? YOUR ANSWER : ?