chemical engineering nuclear power engineering MCQs – Page 7

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 Review each marked answer and report any item that may be outdated or unclear.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
121. Neutrons have mass approximately equal to that of _____________ atoms?
comments icon0
A. Hydrogen

B. Helium

C. None of these

D. Deuterium

122. 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 ?
comments icon0

A. A

B. A + Z

C. Z

D. A Z
123. In ?-decay of radioactive material, the ratio of neutron to proton____________________?
comments icon0

A. Is unpredictable; may increase or decrease

B. Decreases

C. Increases

D. Remain same

124. The mass number of an element is equal to the number of _____________ in the nucleus?
comments icon0
A. Neutrons plus protons (i.e., nucleons)

B. Electrons

C. Protons

D. Neutrons

125. Which of the following is not a naturally occurring nuclear fuel ?
comments icon0

A. None of these

B. Plutonium-239

C. Thorium-233

D. Uranium-238

126. Molten sodium is used as a coolant in a fast breeder reactor, because of its_________________?
comments icon0

A. Neutron breeding capability

B. Faster heat removal capability from the core

C. Excellent moderating properties

D. Capability to increase the reaction rate in the core

127. Which of the following may be used to measure the rate of nuclear disintegration ?
comments icon0

A. Cold chamber

B. Mass spectrograph

C. Cyclotron

D. Geiger-Muller Counter
128. The most commonly used nuclear fuel in boiling water reactor is___________________?
comments icon0

A. Natural uranium

B. Enriched uranium

C. Monazite sand

D. Plutonium

129. Percentage of heavy water in ordinary water is around__________________?
comments icon0

A. 0.71

B. 7.54

C. 32.97

D. 0.015
130. Critical mass is the minimum mass of nuclear fissile material required for the__________________?
comments icon0

A. None of these

B. Sustainment of chain reaction

C. Power generation on commercial scale

D. Economic power generation

131. Fast breeder reactors do not____________________?
comments icon0

A. Use molten sodium as coolant

B. Use Th-232 as fissile fuel

C. Convert fertile material to fissile material

D. Use fast neutrons for fission

132. Nuclides having the same atomic numbers are termed as___________________?
comments icon0

A. Isotones

B. Isomers

C. Isotopes

D. Isobars

133. Main source of ______________ is monazite sand?
comments icon0

A. Uranium

B. Polonium

C. Hafnium

D. Thorium
134. Percentage of the heavy water in ordinary water is around ____________________?
comments icon0

A. 7.54

B. 0.71

C. 0.015

D. 32.97

135. Uranium percentage in monazite sand is about________________?
comments icon0

A. 7

B. 0.01

C. 0.25

D. 1.2

136. Which of the following is not an ore of uranium ?
comments icon0
A. Kyanite

B. Rescolite

C. Carnotite

D. Pitchblende

137. Pick out the wrong statement?
comments icon0

A. The ratio of the density of the nucleus to that of the atom is 1012

B. ?-particle is identical with a doubly charged helium ion

C. The mass of deuterium atom is half that of helium atom

D. Gamma rays are high energy electrons
138. H2 is a better coolant than CO2, due to it?s relatively____________________?
comments icon0
A. Higher specific heat

B. Lower neutron capture cross-section

C. Non-reactivity to uranium

D. Lower density

139. The most abundant isotope of natural uranium is ___________________?
comments icon0

A. 92U235

B. 92U238

C. None of these

D. 92U234

140. Heavy water has maximum density at ______________ C ?
comments icon0
A. 11.6

B. 4

C. 18.6

D. 0