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Quiz 5
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Q.1
Enriched uranium is one in which
%age of U235 has been artificially in-creased
%age of U has been artificially increased
%age of U234 has been artificially increased
extra energy is pumped from outside
Q.2
The first nuclear power plant in India is located at
Baraeilly
Kalapakkam
Kota
Tarapur
Q.3
The risk of radioactive hazard is greatest in the turbine with following reactor
pressurized water
boiling water
gas cooled
liquid metal cooled
Q.4
Electron-volt is the unit of
atomic power
energy
voltage
radio activity
Q.5
The unit of radio-activity is
AMU
curie
MeV
electron-ampere
Q.6
Pick up the wrong statement Fast breeder reactors
operate at extremely high power densities.
produce more fuel than they consume
are liquid-metal cooled
use water as coolant
Q.7
Uranium-is produced
by neutron irradiation of thorium
by neutron irradiation of Uz
artificially
as basic raw material
Q.8
In triggering fission, the following types of neutrons are desirable
neutrons at rest
critical neutrons
slow moving
fast moving
Q.9
Superheated steam is generated in following reactor
gas cooled
pressurized water
boiling water
all of the above
Q.10
In a fission process, maximum %age of energy is released as
kinetic energy of fission products
instantaneous release of gamma rays
kinetic energy of neutrons
none of the above
Q.11
The following present serious difficulty in designing reactor shield
fast neutrons and gamma rays
alpha particles
beta particles
none of the above
Q.12
In nuclear fission
the original elements change into completely different elements
the electrons of the element change
the molecules rearrange themselves to form other molecules
none of the above
Q.13
Moderator in nuclear plants is used to
reduce temperature
extract heat from nuclear reaction
control the reaction
cause collision with the fast moving neutrons to reduce their speed
Q.14
Each fission of Uproduces following number of fast neutrons per fission
1 2 neutrons
1 neutron
2 neutrons
infinite
Q.15
Radioactive isotopes find application in
power generation
nuclear fission
nuclear fusion
medical field
Q.16
A fast breeder reactor uses
U-239
U-238
90% U-235
Pu-239
Q.17
In boiling water reactor, moderator is
ferrite rod
coolant itself
liquid sodium metal
blanket of thorium
Q.18
The most commonly used moderator in nuclear plants is
deuterium
graphite
heavy water
concrete and bricks
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