chemical engineering nuclear power engineering MCQs – Page 8

Practise multiple-choice questions from chemical engineering nuclear power engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering nuclear power engineering Mcqs
141. ____________ moderator is used in a fast breeder reactor?
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A. No

B. Beryllium

C. Graphite

D. Heavy water

142. A moderator _____________ the neutrons?
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A. Slows down

B. Absorbs

C. Accelerates

D. Reflects

143. Nuclear fuel complex, Hyderabad is engaged in the job of ___________________?
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A. Treatment of spent fuel

B. Processing of uranium ore

C. None of these

D. Manufacture of nuclear fuel elements/assemblies
144. Thermal shield is used in high powered nuclear reactors to__________________?
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A. Slow down the secondary neutrons

B. Protect the walls of the reactor from radiation damage

C. Absorb the fast neutrons

D. Protect the fuel element from coming in contact with the coolant

145. Thorium-232 is converted into uranium-233 in a/an ______________ nuclear reactor?
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A. Enriched uranium

B. Thermal

C. Fast breeder

D. Heavy water moderated

146. In a homogeneous nuclear reactor, the _____________ are mixed together?
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A. Fuel & moderator

B. Coolant & moderator

C. None of these

D. Fuel & coolant

147. Atoms with same number of neutrons, but different number of nucleons are called___________________?
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A. Isostere

B. Isobars

C. Isotones

D. Isotopes

148. Radioactive decay is a _____________ change?
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A. Chemical

B. Physical

C. None of these

D. Nuclear
149. Light water used as a coolant in nuclear reactor is nothing but______________________?
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A. Mildly alkaline (pH = 8) water

B. None of these

C. Mildly acidic (pH = 6) water

D. Ordinary water
150. Which of the following reactors is operated at high neutron flux and low power level ?
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A. Research reactor

B. Heterogeneous reactor

C. Breeder reactor

D. Liquid metal (e.g., molten sodium) cooled reactor

151. The critical mass of a fissionable material can be reduced by__________________?
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A. Cooling it

B. Surrounding it by neutron reflecting material

C. Surrounding it by neutron absorbing material

D. Heating it

152. Which one is the radioactive isotope of hydrogen ?
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A. Deuterium

B. Ortho-hydrogen

C. None of these

D. Tritium
153. Uranium Corporation of India Limited (UCIL) engaged in the mining & concentration of uranium ore is located at_______________?
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A. Alwaye (in Kerala)

B. Kalpakkam (in Tamilnadu)

C. Jadugoda (in Jharkhand)

D. Gopalpur coast (in Orissa)

154. A fast breeder reactor____________________?
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A. Uses natural uranium as fuel

B. Does not require a moderator

C. Both A. and B.

D. Neither A. nor B.

155. Solar energy results from _______________ reaction?
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A. Combustion

B. Thermonuclear

C. None of these

D. Fission

156. Heavy water used in the nuclear reactors to slow down the speed of neutrons is __________________?
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A. None of these

B. A compound of oxygen and deuterium

C. Water having dissolved salts of heavy metals

D. Highly purified water

157. Thorium metal__________________?
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A. Is highly ductile

B. Resembles steel in appearance

C. Is less hard (in the range of silver)

D. All A., B. and C.
158. A radioactive isotope undergoes decay with respect to time following _____________ law?
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A. Exponential

B. Logarithmic

C. Inverse square

D. Linear

159. Which of the following is not used as a moderator in nuclear reactor ?
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A. Beryllium

B. Light water

C. Molten sodium

D. Boron hydride

160. The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be _____________ percent?
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A. 6.25

B. 12.5

C. 3.125

D. 25