A. light weight atoms
B. heavy weight atoms
C. critical atoms
D. zero weight atoms
E. there is no such criterion
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Related Mcqs:
- Amongst the following, the fissionable materials are________________?
- A. U233andPu239 B. U23iandPu233 C. U235andPu235 D. U238andPu239 E. U243andPu235...
- Gas cooled reactor uses following materials as moderator, and coolant____________________?
- A. graphite, C02 B. graphite, air C. heavy water, C02 D. lead, H2 E. concrete, N2...
- Which is not identical for an atom and an isotope_________________?
- A. mass number B. atomic number C. chemical properties D. position in periodic table E. all of the above...
- Fast breeder reactor uses___________________?
- A. boiler B. direct cycle of coolant system C. double circuit system of coolant cycle D. multi pass system E. single circuit system...
- The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is________________?
- A. same B. lower C. higher D. unity E. higher/lower depending on the size of reactor...
- The number of isotopes of hydrogen are _________________?
- A. 1 B. 2 C. U C. 3 E. 0...
- U235 will undergo fission by__________________?
- A. high energy (fast) neutrons alone B. low energy (slow) neutrons alone C. either fast or slow neutrons D. medium energy neutrons E. none of the above...
- Which of the following is the primary fuel________________?
- A. Ulii B. U C. U238 D. Pu: E. Pu...
- The following present serious difficulty in designing reactor shield_________________?
- A. alpha particles B. beta particles C. thermal neutrons D. fast neutrons and gamma rays E. none of the above...
- A fast breeder reactor uses following as fuel_________________?
- A. enriched uranium B. plutonium C. thorium D. U235 E. natrual uranium...
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