chemical engineering nuclear power engineering MCQs – Page 6

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 Review each marked answer and report any item that may be outdated or unclear.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

101. In a pressurised water reactor (PWR), the___________________?
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A. Fuel is natural uranium and heavy water acts both as moderator & coolant

B. Coolant water boils in the core of the reactor

C. Coolant water is pressurised to prevent bulk boiling of water in the core

D. Use of moderator is not required

102. The new nucleus formed after ?-decay of a radioactive element has___________________?
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A. More atomic number

B. Less atomic weight

C. Less atomic number

D. More atomic weight

103. Fuel for a fast breeder reactor is_________________?
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A. Uranium

B. Radium

C. Neptunium

D. Plutonium

104. Pick out the wrong statement?
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A. The nucleus of a hydrogen atom is identical with a proton

B. Positron is heavier than a proton

C. Mass of an electron is about 1/1800th of the lightest nucleus

D. A, ?-ray particle is identical with an electron

105. Quantity of fissionable material (i.e. U-235) in natural uranium is _____________ percent?
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A. 12.73

B. 6.31

C. 0.71

D. 99.29

106. The main ore of thorium is_________________?
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A. Limonite

B. Pitchblende

C. Monazite sand

D. Galena

107. When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as____________________?
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A. Isotones

B. Isomers

C. Isotopes

D. Isobars

108. First experimental observation of nuclear fission was done by ____________________?
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A. Fermi

B. Rutherford

C. Hahn and Strassmann

D. Plane

109. Safety rods provided in nuclear reactors to guard against accidents, in case of earthquake are made of___________________?
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A. Zircaloy

B. Molybdenum

C. High carbon steel

D. Boron or cadmium

110. The phenomenon of nuclear fission is opposite to that of__________________?
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A. Radioactive decay

B. Nuclear fusion

C. Combustion

D. Thermionic emission

111. Commercial power generation from fusion reactor is not yet possible, because___________________?
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A. It is difficult to initiate fusion reaction

B. Quantity of fuel required for initiating fusion reaction is prohibitively high

C. It is difficult to control nuclear fusion reaction

D. The fuel required (i.e., deuterium & tritium) is scarce

112. Hydrogen differs from deuterium in _____________ properties?
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A. Radioactive

B. Chemical

C. Physical

D. All A., B. and C.

113. Percentage of U-238 in natural uranium is around__________________?
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A. 99.29

B. 29.71

C. 0.71

D. 0.015

114. Research reactors are normally meant for_____________________?
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A. Accelerating the neutrons

B. None of these

C. Producing high neutron flux 1012-1013 neutrons/cm2, sec and studying the effect of neutron

D. Power generation

E. bardment on different materials</strong>

115. Unit of radioactivity is__________________?
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A. Curie

B. Angstrom

C. Barn

D. Fermi

116. ____________ nuclear reactor does not require a heat exchanger to supply steam to power turbine?
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A. Boiling water

B. Molten sodium cooled

C. Pressurised water

D. Helium cooled

117. Isotopes of an element have different_________________?
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A. Chemical properties

B. Electronic configuration

C. Nuclear charge

D. Mass number

118. Which of the following is artificially produced as it does not occur in nature ?
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A. Uranium-235

B. Uranium-233

C. Plutonium-239

D. Both B. and C.

119. A fast breeder reactor employs___________________?
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A. Molten sodium as coolant as well as moderator

B. Graphite as moderator

C. U-235 as fuel

D. Water as coolant

120. The 92U238 emits an a-particle. The product is____________________?
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A. 92U236

B. 90U234

C. 90U238

D. 90U236

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