Nuclear Power Engineering MCQs Competitive – New Chemical Engineering MCQs
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Latest Chemical Engineering MCQs
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Latest Nuclear Power Engineering Mcqs
The most occurred mcqs of Nuclear Power Engineering in past papers. Past papers of Nuclear Power Engineering Mcqs. Past papers of Nuclear Power Engineering Mcqs . Mcqs are the necessary part of any competitive / job related exams. The Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Nuclear Power Engineering Mcqs. The Important series of Nuclear Power Engineering Mcqs are given below:
Hydrogen differs from deuterium in _____________ properties?
A. Chemical
B. Physical
C. Radioactive
D. All A., B. and C.
The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?
A. A
B. A – Z
C. A + Z
D. Z
Pressure in a Pressurised Water Reactor (PWR) is used for ____________________?
A. Maintaining constant pressure in the primary cooling circuit under varying loads
B. Pressurising the water in the primary coolant circuit
C. Superheating the steam
D. None of these
The main ore of uranium is ______________________?
A. Pitchblende
B. Cassiterite
C. Monazite sand
D. Chalcopyrite
Commercial power generation from fusion reactor is not yet possible, because_____________________?
A. It is difficult to control fusion reaction
B. It is difficult to initiate fusion reaction
C. The fuel required (e.g. deuterium and tritium) is scarce
D. Quantity of fuel required for initiating fusion reaction is prohibitively high
A fast breeder reactor____________________?
A. Uses natural uranium as fuel
B. Does not require a moderator
C. Both of the above
D. Neither of the above
Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around _____________ m/sec?
A. 3 × 1011
B. 2200
C. 1
D. 9 × 1021
____________ moderator is used in a fast breeder reactor?
A. Heavy water
B. Graphite
C. Beryllium
D. No
Nuclear fuel usually used in a Boiling Water Reactor (BWR) is__________________?
A. Natural uranium
B. Enriched uranium
C. Plutonium
D. Thorium
Atoms of U-238 and U-235 differ in structure by three_____________________?
A. Electrons and three protons
B. Electrons
C. Neutrons
D. Protons
Moderating material used in a thermal-reactor should be a ____________________?
A. Solid substance
B. Good absorber of neutrons
C. Poor absorber of neutrons
D. None of these
Which of the following radiations is the least penetrating ?
A. α-rays
B. γ-rays
C. β-rays
D. X-rays
____________ nuclear reactor does not require a heat exchanger to supply steam to power turbine?
A. Helium cooled
B. Molten sodium cooled
C. Boiling water
D. Pressurised water
A thermal nuclear reactor compared to a fast breeder reactor ?
A. Uses slower neutrons for fission
B. Gives higher power density
C. Uses faster neutrons for fission
D. Requires less fuel to run at the same power level
Sodium melts (at atmospheric pressure) at a temperature of ____________ °C?
A. 348
B. 98
C. 58
D. 588
The radioisotope used to study the thyroid gland is__________________?
A. Iodine
B. Iron
C. Cobalt
D. Carbon
Fluid Mechanics Mcqs
Which of the following is not used as a nuclear fuel cladding material ?
A. Ceramics
B. Cadmium
C. Zircaloy
D. Stainless steel
75% of a radioactive element decays in 6 hours. Its half life period is ______________ hours?
A. 1/6
B. 3/4
C. 3
D. 4
One ‘amu’ is equivalent to___________________?
A. 931 eV
B. 9.31 MeV
C. 931 Mev
D. 931 J
An element having large number of ______________ is most easily subjected to nuclear fission?
A. Electrons
B. Protons
C. Neutrons
D. Nucleons
The amount of a radioactive material (having a half life of 100 years) remaining after 400 years will be ______________ of its original weight?
A. 1/4
B. 1/2
C. 1/8
D. 1/16
Mass of a positron is same as that of a/an__________________?
A. Electron
B. Proton
C. α-particle
D. Neutron
The number of neutrons in the nucleus of Uranium-233 (92U233) is _________________?
A. 141
B. 233
C. 92
D. 325
A homogeneous reactor is the one, in which the___________________?
A. Same substance (e.g. heavy water) is used as moderator & coolant
B. Fissile atoms are evenly distributed throughout the mass of nuclear reactor
C. The fuel and the moderator is mixed to form a homogeneous material
D. All A., B. and C.
Molten sodium is used as a coolant in a fast breeder reactor, because of its_________________?
A. Neutron breeding capability
B. Excellent moderating properties
C. Faster heat removal capability from the core
D. Capability to increase the reaction rate in the core
Heat is generated in a nuclear reactor (thermal) by_________________?
A. Fusion of atoms of uranium
B. Combustion of a nuclear fuel e.g. uranium
C. Absorption of neutrons in uranium atoms
D. Fission of U-235 by neutrons
In a homogeneous nuclear reactor, the _____________ are mixed together?
A. Coolant & moderator
B. Fuel & moderator
C. Fuel & coolant
D. None of these
A fertile material is the one, which can be__________________?
A. Converted into fissile material on absorption of neutron
B. Fissioned by fast neutrons
C. Fissioned by slow (thermal) neutrons
D. Fissioned by either slow or fast neutrons
In a pressurised water reactor (PWR), the___________________?
A. Coolant water boils in the core of the reactor
B. Fuel is natural uranium and heavy water acts both as moderator & coolant
C. Coolant water is pressurised to prevent bulk boiling of water in the core
D. Use of moderator is not required
What is the average life of a radioactive atom having a ‘half life period’ of T ?
A. 1.44 T
B. 14.4 T
C. 0.144 T
D. 2T
In a nuclear explosion, the energy is released primarily in the form of _____________ energy?
A. Thermal
B. Potential
C. Kinetic
D. Electrical
The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is_____________________?
A. Less
B. Same
C. More
D. Much more
Heavy water (D2O) in a nuclear reactor serves as a_______________?
A. Moderator
B. Coolant
C. Both A. & B.
D. Neutron absorber
A boiling water reactor is the one, in which the_______________________?
A. Coolant water is allowed to boil in the core of the reactor
B. Pressurised water is pumped into the core
C. Coolant water, after being heated in the reactor core, generates steam in a boiler
D. Fuel and the coolant are thoroughly mixed to form a homogeneous solution
Materials And Construction Mcqs
The most abundant isotope of natural uranium is ___________________?
A. 92U238
B. 92U234
C. 92U235
D. None of these
Extraction of uranium from its ore is done by ______________ method?
A. Chemical
B. Physical beneficiation
C. Pyrometallurgical
D. Electrometallurgical
The atomic number of a radioactive element is not changed, when it emits _____________ rays?
A. β
B. α
C. γ
D. α & β
A moderator _____________ the neutrons?
A. Slows down
B. Accelerates
C. Absorbs
D. Reflects
Isotopes of an element have different_____________________?
A. Mass number
B. Nuclear charge
C. Electronic configuration
D. Chemical properties
The ratio of atomic radius to its nuclear radius is about___________________?
A. 105
B. 1012
C. 108
D. 1015
Which of the following nuclear materials is fissile ?
A. Thorium-232
B. Uranium-238
C. Plutonium-239
D. None of these
Gas cooling as compared to water cooling of nuclear reactors___________________?
A. Is more efficient as gas has a higher specific heat
B. Cannot attain a high temperature
C. Can produce only saturated steam for feeding to power turbine
D. None of these
Unit of radioactivity is__________________?
A. Fermi
B. Barn
C. Angstrom
D. Curie
The velocity of thermal (slow) neutrons triggering nuclear fission reaction (having energy equal to 0.025 eV) is about ______________ metres/second?
A. 3300
B. 2200
C. 1100
D. 4400
Extraction of uranium from its ore is done using ______________ methods?
A. Pyrometallurgical
B. Electrometallurgical
C. Chemical
D. Physical beneficiation
Quantity of fissionable material (i.e. U-235) in natural uranium is _____________ percent?
A. 0.71
B. 99.29
C. 6.31
D. 12.73
Fast breeder reactors do not____________________?
A. Use Th-232 as fissile fuel
B. Use fast neutrons for fission
C. Convert fertile material to fissile material
D. Use molten sodium as coolant
Fuel for a fast breeder reactor is_________________?
A. Plutonium
B. Radium
C. Uranium
D. Neptunium
The main ore of thorium is_________________?
A. Limonite
B. Monazite sand
C. Pitchblende
D. Galena
Uranium percentage in monazite sand is about________________?
A. 1.2
B. 0.25
C. 0.01
D. 7
Which of the following is a moderating material used in nuclear reactor ?
A. Graphite
B. Stainless steel
C. Zircaloy (an alloy of zirconium and aluminium)
D. Cadmium
Nuclear reactors are provided with shield to guard against the emission of mainly _____________ rays?
A. α and β
B. X
C. Neutrons & gamma
D. Infrared
Nuclear Power Engineering Mcqs
The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be _____________ percent?
A. 12.50
B. 6.25
C. 3.125
D. 25
Out of the following, nucleus of _____________ atom contains the largest number of neutrons?
A. U-238
B. U-235
C. U-239
D. Pu-239
Molten sodium (as a coolant in fast breeder reactor) ?
A. Is not at all corrosive, even at a higher temperature
B. Can’t attain high temperature at normal pressure
C. Is highly radioactive at elevated temperatures and can cause explosion, when it comes in contact with air or water
D. None of these
Commercial power generation from fusion reactor is not yet possible, because___________________?
A. It is difficult to control nuclear fusion reaction
B. It is difficult to initiate fusion reaction
C. The fuel required (i.e., deuterium & tritium) is scarce
D. Quantity of fuel required for initiating fusion reaction is prohibitively high
Thermal shield is used in high powered nuclear reactors to__________________?
A. Protect the walls of the reactor from radiation damage
B. Slow down the secondary neutrons
C. Absorb the fast neutrons
D. Protect the fuel element from coming in contact with the coolant
A radioactive substance does not emit________________?
A. Position
B. Proton
C. α-ray
D. β-ray
The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is ___________________?
A. 1
B. 2
C. 0.5
D. 4
Coolant used in a boiling water reactor is________________?
A. Water
B. Hydrogen gas
C. Steam
D. A mixture of water & steam
The 92U238 emits an a-particle. The product is____________________?
A. 90U234
B. 90U236
C. 90U238
D. 92U236
Percentage of the heavy water in ordinary water is around ____________________?
A. 0.015
B. 0.71
C. 7.54
D. 32.97
Which is the most commonly used molten metal for cooling of nuclear reactors ?
A. Mercury
B. Sodium
C. Calcium
D. Zinc
Energy produced in the nuclear fission is of the order of _____________ MeV?
A. 1000
B. 200
C. 20
D. 2000
_____________ have the same mass number, but different nuclear charge ?
A. Isotones
B. Isobars
C. Isotopes
D. None of these
The mass number of an element is equal to the number of _____________ in the nucleus?
A. Neutrons
B. Electrons
C. Protons
D. Neutrons plus protons (i.e., nucleons)
Radioactive decay is a _____________ change?
A. Physical
B. Nuclear
C. Chemical
D. None of these
The atomic number of an element is equal to the number of ______________ present in its atom?
A. Electrons
B. Neutrons
C. Protons
D. Either B. or C.
“Critical mass” is the minimum mass of nuclear fissile material required for the__________________?
A. Sustainment of chain reaction
B. Economic power generation
C. Power generation on commercial scale
D. None of these
The atomic mass of an element is fractional, because ______________________?
A. It may have isobars
B. Of uncertainty principle
C. It contains neutrons
D. It may have isotopes