chemical-engineering-nuclear-power-engineering Related Question Answers
128. Which of the following undergoes fission reaction easily ?
129. Thorium-232 (a fertile material) on absorption of a neutron gets converted into __________ , which is a fissile material.
131. Safety rods provided in nuclear reactors to guard against accidents, in case of earthquake are made of
132. Which of the following is not used as a moderator in nuclear reactor ?
133. In β-decay of radioactive material, the ratio of neutron to proton
134. When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as
135. The critical mass of a fissionable material can be reduced by
136. Primary purpose of a __________ nuclear reactor is to supply a high neutron flux of the order of 1013 to 1014 neutrons/cm2 second.
137. The first underground nuclear test was conducted by India at
139. A radioactive isotope undergoes decay with respect to time following __________ law.
140. Atoms of U-238 and U-235 differ in structure by three
141. Heavy water (D2O) in a nuclear reactor serves as a
142. Which of the following nuclear materials is fissile ?
143. Extraction of uranium from its ore is done using __________ methods.
145. Function of control rod in a nuclear reactor is to control
146. The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is
147. Fast breeder reactors are most usable in India, because of our largest __________ deposits.
148. In the nuclear reaction, 93N239 94Pu239 + ?; the missing particle is a/an
149. Critical energy should be __________ the neutron binding energy of the atom in order to initiate a nuclear fission.
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