If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor. (A) Critical (B) Breeder (C) Fertile (D) Heterogeneous

If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.
(A) Critical
(B) Breeder
(C) Fertile
(D) Heterogeneous
by

1 Answer

Answer :

(B) Breeder
by

Related questions

In a breeder reactor --------- a. amount of fuel decreases b. amount of fuel increases c. amount of fuelremain same d. fissile material is converted in to fertile

Description : In a breeder reactor --------- a. amount of fuel decreases b. amount of fuel increases c. amount of fuelremain same d. fissile material is converted in to fertile

Last Answer : b. amount of fuel increases

A fast breeder reactor (A) Utilises fast neutrons for causing fission (B) Converts fertile material (e.g., U-238) into fissile material (Pu-239) (C) Normally employs molten sodium as coolant (D) All (A), (B) and (C)

Description : A fast breeder reactor (A) Utilises fast neutrons for causing fission (B) Converts fertile material (e.g., U-238) into fissile material (Pu-239) (C) Normally employs molten sodium as coolant (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Fast breeder reactors do not (A) Use Th-232 as fissile fuel (B) Convert fertile material to fissile material (C) Use fast neutrons for fission (D) Use molten sodium as coolant

Description : Fast breeder reactors do not (A) Use Th-232 as fissile fuel (B) Convert fertile material to fissile material (C) Use fast neutrons for fission (D) Use molten sodium as coolant

Last Answer : (A) Use Th-232 as fissile fuel

Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material). (A) 15 (B) 45 (C) 65 (D) 85

Description : Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material). (A) 15 (B) 45 (C) 65 (D) 85

Last Answer : (D) 85

The main purpose of control rod in a nuclear reactor is to control the (A) Chain reaction and hence the power output by regulating the number of secondary neutrons causing fission (B) Emission of hazardous radiation (C) Conversion of fissile material into fertile material (D) Velocity of the secondary neutrons

Description : The main purpose of control rod in a nuclear reactor is to control the (A) Chain reaction and hence the power output by regulating the number of secondary neutrons causing fission (B) ... radiation (C) Conversion of fissile material into fertile material (D) Velocity of the secondary neutrons

Last Answer : (A) Chain reaction and hence the power output by regulating the number of secondary neutrons causing fission

Fast breeder test reactor at Kalpakkam (INDIA) is designed for using (A) Thorium as a fertile material (B) U-238 as a fertile material (C) Helium as a coolant (D) Uranium ore directly as a fuel

Description : Fast breeder test reactor at Kalpakkam (INDIA) is designed for using (A) Thorium as a fertile material (B) U-238 as a fertile material (C) Helium as a coolant (D) Uranium ore directly as a fuel

Last Answer : (A) Thorium as a fertile material

A homogeneous reactor is the one, in which the (A) Fissile atoms are evenly distributed throughout the mass of nuclear reactor (B) Same substance (e.g. heavy water) is used as moderator & coolant (C) The fuel and the moderator is mixed to form a homogeneous material (D) All (A), (B) and (C)

Description : A homogeneous reactor is the one, in which the (A) Fissile atoms are evenly distributed throughout the mass of nuclear reactor (B) Same substance (e.g. heavy water) is used as moderator & coolant (C) The fuel and the moderator is mixed to form a homogeneous material (D) All (A), (B) and (C)

Last Answer : (C) The fuel and the moderator is mixed to form a homogeneous material

Thorium is mainly used (A) For the manufacture of gas mantles (B) As a fissile fuel in a nuclear reactor (C) In the manufacture of hydrogen bomb (D) In the treatment of cancer

Description : Thorium is mainly used (A) For the manufacture of gas mantles (B) As a fissile fuel in a nuclear reactor (C) In the manufacture of hydrogen bomb (D) In the treatment of cancer

Last Answer : (A) For the manufacture of gas mantles

In a nuclear power reactor, fission produces heat which is used to produce electricity. A reactor producing more fissionable material than it consumes is known as what kind of reactor?

Description : In a nuclear power reactor, fission produces heat which is used to produce electricity. A reactor producing more fissionable material than it consumes is known as what kind of reactor? 

Last Answer : ANSWER: BREEDER REACTOR 

A thermal nuclear reactor compared to a fast breeder reactor (A) Uses slower neutrons for fission (B) Uses faster neutrons for fission (C) Gives higher power density (D) Requires less fuel to run at the same power level

Description : A thermal nuclear reactor compared to a fast breeder reactor (A) Uses slower neutrons for fission (B) Uses faster neutrons for fission (C) Gives higher power density (D) Requires less fuel to run at the same power level

Last Answer : (A) Uses slower neutrons for fission

Fuel for a fast breeder nuclear reactor is (A) Plutonium (B) Uranium (C) Radium (D) Neptunium

Description : Fuel for a fast breeder nuclear reactor is (A) Plutonium (B) Uranium (C) Radium (D) Neptunium

Last Answer : (A) Plutonium

Which of the following reactors is operated at high neutron flux and low power level? (A) Breeder reactor (B) Research reactor (C) Heterogeneous reactor (D) Liquid metal (e.g., molten sodium) cooled reactor

Description : Which of the following reactors is operated at high neutron flux and low power level? (A) Breeder reactor (B) Research reactor (C) Heterogeneous reactor (D) Liquid metal (e.g., molten sodium) cooled reactor

Last Answer : (B) Research reactor

Thermal nuclear reactors using enriched uranium as fuel contains a maximum of __________ percent fissile material i.e. U-235. (A) 1 (B) 2 (C) 3 (D) 7

Description : Thermal nuclear reactors using enriched uranium as fuel contains a maximum of __________ percent fissile material i.e. U-235. (A) 1 (B) 2 (C) 3 (D) 7

Last Answer : (C) 3

Thorium-232 (a fertile material) on absorption of a neutron gets converted into __________ , which is a fissile material. (A) Thorium-233 (B) Uranium-235 (C) Uranium-233 (D) Plutonium-239

Description : Thorium-232 (a fertile material) on absorption of a neutron gets converted into __________ , which is a fissile material. (A) Thorium-233 (B) Uranium-235 (C) Uranium-233 (D) Plutonium-239

Last Answer : (C) Uranium-233

Nuclear power reactor located at Tarapur is of __________ type. (A) Fast breeder (B) Pressurised water (C) Boiling water (D) Gas cooled

Description : Nuclear power reactor located at Tarapur is of __________ type. (A) Fast breeder (B) Pressurised water (C) Boiling water (D) Gas cooled

Last Answer : (C) Boiling water

Thorium-232 is converted into uranium-233 in a/an __________ nuclear reactor. (A) Thermal (B) Fast breeder (C) Heavy water moderated (D) Enriched uranium

Description : Thorium-232 is converted into uranium-233 in a/an __________ nuclear reactor. (A) Thermal (B) Fast breeder (C) Heavy water moderated (D) Enriched uranium

Last Answer : (B) Fast breeder

Candu reactor is a __________ nuclear reactor. (A) Natural uranium fuelled heavy water cooled & moderated (B) Highly enriched uranium (85% U-235) fuelled (C) Homogeneous (D) Fast breeder

Description : Candu reactor is a __________ nuclear reactor. (A) Natural uranium fuelled heavy water cooled & moderated (B) Highly enriched uranium (85% U-235) fuelled (C) Homogeneous (D) Fast breeder

Last Answer : (A) Natural uranium fuelled heavy water cooled & moderated

Primary purpose of a __________ nuclear reactor is to supply a high neutron flux of the order of 10 13 to 10 14neutrons/cm2 second. (A) Research (B) Power (C) Breeder (D) Homogeneous

Description : Primary purpose of a __________ nuclear reactor is to supply a high neutron flux of the order of 10 13 to 10 14neutrons/cm2 second. (A) Research (B) Power (C) Breeder (D) Homogeneous

Last Answer : (A) Research

Critical mass" is the minimum mass of nuclear fissile material required for the (A) Sustainment of chain reaction (B) Power generation on commercial scale (C) Economic power generation (D) None of these

Description : Critical mass" is the minimum mass of nuclear fissile material required for the (A) Sustainment of chain reaction (B) Power generation on commercial scale (C) Economic power generation (D) None of these

Last Answer : (A) Sustainment of chain reaction

Critical mass" is the minimum mass of nuclear fissile materialrequired for the(A) Sustainment of chain reaction(B) Power generation on commercial scale(C) Economic power generation(D) None of these

Description : Critical mass" is the minimum mass of nuclear fissile materialrequired for the (A) Sustainment of chain reaction (B) Power generation on commercial scale (C) Economic power generation (D) None of these

Last Answer : (A) Sustainment of chain reaction

Enriched uranium means that, it contains (A) More than 0.71% of U-235 (B) Only fertile material (C) Only fissile material (D) No impurities

Description : Enriched uranium means that, it contains (A) More than 0.71% of U-235 (B) Only fertile material (C) Only fissile material (D) No impurities

Last Answer : (A) More than 0.71% of U-235

Which reactor produces more fissionable material than it consumes ?

Description : Which reactor produces more fissionable material than it consumes ?

Last Answer : Breeder reactor.

A fertile material is the one, which can be (A) Converted into fissile material on absorption of neutron (B) Fissioned by slow (thermal) neutrons (C) Fissioned by fast neutrons

Description : A fertile material is the one, which can be (A) Converted into fissile material on absorption of neutron (B) Fissioned by slow (thermal) neutrons (C) Fissioned by fast neutrons

Last Answer : (A) Converted into fissile material on absorption of neutron

In which of the electric power generation system, the operating cost is minimum? (A) Thermal (B) Nuclear (C) Hydroelectric (D) Fast breeder reactor

Description : In which of the electric power generation system, the operating cost is minimum? (A) Thermal (B) Nuclear (C) Hydroelectric (D) Fast breeder reactor

Last Answer : (C) Hydroelectric

Fuel for a fast breeder reactor is (A) Plutonium (B) Uranium (C) Radium (D) Neptunium

Description : Fuel for a fast breeder reactor is (A) Plutonium (B) Uranium (C) Radium (D) Neptunium

Last Answer : (A) Plutonium

A fast breeder reactor (A) Uses natural uranium as fuel (B) Does not require a moderator (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : A fast breeder reactor (A) Uses natural uranium as fuel (B) Does not require a moderator (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (B) Does not require a moderator

A fast breeder reactor employs (A) Graphite as moderator (B) Water as coolant (C) Molten sodium as coolant as well as moderator (D) U-235 as fuel

Description : A fast breeder reactor employs (A) Graphite as moderator (B) Water as coolant (C) Molten sodium as coolant as well as moderator (D) U-235 as fuel

Last Answer : (D) U-235 as fuel

Explain difference between fissile and fertile materials.

Description : Explain difference between fissile and fertile materials.

Last Answer : The materials which can give nuclear fission e.g. U 35, Pu 39, U 33 are fissile materi¬als. Fertile material itself is not fissionable, but it can be converted to a fissionable material by irradiation of neutrons in a nuclear reactor.

A heterogeneous reactor is the one, in which the moderator and the (A) Coolant are different materials (B) Coolant are present in different phases (e.g., heavy water and graphite) (C) Fuel are present in different phases (e.g. uranium and heavy water) (D) None of these

Description : A heterogeneous reactor is the one, in which the moderator and the (A) Coolant are different materials (B) Coolant are present in different phases (e.g., heavy water and graphite) (C) Fuel are present in different phases (e.g. uranium and heavy water) (D) None of these

Last Answer : (C) Fuel are present in different phases (e.g. uranium and heavy water

Fuel used in a Fast Breeder Reactor is -------? A. Uranium Oxide B. Uranium Plutonium carbide C. Uranium Plutonium Oxide (Answer) D. Uranium thorium Oxide E. None of these

Description : Fuel used in a Fast Breeder Reactor is -------? A. Uranium Oxide B. Uranium Plutonium carbide C. Uranium Plutonium Oxide (Answer) D. Uranium thorium Oxide E. None of these

Last Answer : C. Uranium Plutonium Oxide (Answer)

Direct conversion of chemical energy into electrical energy is done in a (A) Magnetohydrodynamic (MHD) generator (B) Fuel cell (C) Fast breeder reactor (D) None of these

Description : Direct conversion of chemical energy into electrical energy is done in a (A) Magnetohydrodynamic (MHD) generator (B) Fuel cell (C) Fast breeder reactor (D) None of these

Last Answer : (B) Fuel cell

In a breeder reactor, new fuel is formed as non-fuel uranium-238 absorbs a neutron and ultimately becomes which of the following fissionable atoms: w) uranium-235 x) plutonium-239 y) uranium-239 z) neptunium-239

Description : In a breeder reactor, new fuel is formed as non-fuel uranium-238 absorbs a neutron and ultimately becomes which of the following fissionable atoms: w) uranium-235 x) plutonium-239 y) uranium-239 z) neptunium-239

Last Answer : ANSWER: X -- PLUTONIUM-239

__________ moderator is used in a fast breeder reactor. (A) Graphite (B) Heavy water (C) Beryllium (D) No

Description : __________ moderator is used in a fast breeder reactor. (A) Graphite (B) Heavy water (C) Beryllium (D) No

Last Answer : (D) No

Thorium can be converted into U-233 in a __________ reactor. (A) Liquid metal cooled (B) Fast breeder (C) Thermal (D) Swimming pool

Description : Thorium can be converted into U-233 in a __________ reactor. (A) Liquid metal cooled (B) Fast breeder (C) Thermal (D) Swimming pool

Last Answer : (B) Fast breeder

Liquid metal (e.g., molten sodium) is preferred as a coolant in case of a/an __________ reactor. (A) Homogeneous (B) Graphite moderated (C) Fast breeder (D) Enriched uranium (3% U-235) fuelled

Description : Liquid metal (e.g., molten sodium) is preferred as a coolant in case of a/an __________ reactor. (A) Homogeneous (B) Graphite moderated (C) Fast breeder (D) Enriched uranium (3% U-235) fuelled

Last Answer : (C) Fast breeder

Which is a fertile nuclear fuel? (A) U-233(B) U-235 (C) Pu-239 (D) Th-232

Description : Which is a fertile nuclear fuel? (A) U-233 (B) U-235 (C) Pu-239 (D) Th-232

Last Answer : (D) Th-232

Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage. (A) Fuel elements (B) Operating personnels (C) Walls of the reactor (D) None of these

Description : Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage. (A) Fuel elements (B) Operating personnels (C) Walls of the reactor (D) None of these

Last Answer : (B) Operating personnels

In a homogeneous nuclear reactor, the __________ are mixed together. (A) Fuel & coolant (B) Fuel & moderator (C) Coolant & moderator (D) None of these

Description : In a homogeneous nuclear reactor, the __________ are mixed together. (A) Fuel & coolant (B) Fuel & moderator (C) Coolant & moderator (D) None of these

Last Answer : (B) Fuel & moderator

Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage. (A) Fuel elements (B) Operating personnels (C) Walls of the reactor (D) None of these

Description : Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage. (A) Fuel elements (B) Operating personnels (C) Walls of the reactor (D) None of these

Last Answer : (B) Operating personnels

Which of the following nuclear materials is fissile? (A) Uranium-238 (B) Thorium-232 (C) Plutonium-239 (D) None of these

Description : Which of the following nuclear materials is fissile? (A) Uranium-238 (B) Thorium-232 (C) Plutonium-239 (D) None of these

Last Answer : (C) Plutonium-239

Which is not a fissile nuclear material? (A) U-233 (B) U-235 (C) U-238 (D) Pu-239

Description : Which is not a fissile nuclear material? (A) U-233 (B) U-235 (C) U-238 (D) Pu-239

Last Answer : (C) U-238

Molten sodium (as a coolant in fast breeder reactor) (A) Can’t attain high temperature at normal pressure (B) Is not at all corrosive, even at a higher temperature (C) Is highly radioactive at elevated temperatures and can cause explosion, when it comes in contact with air or water (D) None of these

Description : Molten sodium (as a coolant in fast breeder reactor) (A) Can’t attain high temperature at normal pressure (B) Is not at all corrosive, even at a higher temperature (C) Is highly radioactive at elevated temperatures and can cause explosion, when it comes in contact with air or water (D) None of these

Last Answer : (C) Is highly radioactive at elevated temperatures and can cause explosion, when it comes in contact with air or water

Fast breeder Test Reactor (FBTR) is located at (A) Kalpakkam (near Madras) (B) Kota (in Rajasthan) (C) BARC (Trombay) (D) Tarapur (in Maharashtra)

Description : Fast breeder Test Reactor (FBTR) is located at (A) Kalpakkam (near Madras) (B) Kota (in Rajasthan) (C) BARC (Trombay) (D) Tarapur (in Maharashtra)

Last Answer : (A) Kalpakkam (near Madras)

Molten sodium is used as a coolant in a fast breeder reactor, because of its (A) Excellent moderating properties (B) Neutron breeding capability (C) Faster heat removal capability from the core (D) Capability to increase the reaction rate in the core

Description : Molten sodium is used as a coolant in a fast breeder reactor, because of its (A) Excellent moderating properties (B) Neutron breeding capability (C) Faster heat removal capability from the core (D) Capability to increase the reaction rate in the core

Last Answer : (C) Faster heat removal capability from the core

Secondary cooling circuit is a must in molten sodium cooled fast breeder reactor for (A) Achieving high degree of superheat in the steam (B) Faster heat removal rate from the core(C) Lowering the coolant circulation pressure(D) Avoiding the mixing of water with radioactive sodium, as it may causeexplosion

Description : Secondary cooling circuit is a must in molten sodium cooled fast breeder reactor for (A) Achieving high degree of superheat in the steam (B) Faster heat removal rate from the core (C) ... circulation pressure (D) Avoiding the mixing of water with radioactive sodium, as it may cause explosion

Last Answer : (D) Avoiding the mixing of water with radioactive sodium, as it may cause explosion

Coolant used in a fast breeder reactor is (A) Molten sodium (B) Heavy water (C) Ordinary water (D) Helium

Description : Coolant used in a fast breeder reactor is (A) Molten sodium (B) Heavy water (C) Ordinary water (D) Helium

Last Answer : (A) Molten sodium

Use of molten metal as a coolant in fast breeder reactor helps in (A) Rapid heat transfer from the core (B) Accelerating the reaction rate in the core (C) Breeding neutrons (D) Accelerating the neutrons

Description : Use of molten metal as a coolant in fast breeder reactor helps in (A) Rapid heat transfer from the core (B) Accelerating the reaction rate in the core (C) Breeding neutrons (D) Accelerating the neutrons

Last Answer : (A) Rapid heat transfer from the core

Which of the following may not need a moderator? (A) Candu reactor (B) Fast breeder reactor (C) Homogeneous reactor (D) Pressurised water reactor

Description : Which of the following may not need a moderator? (A) Candu reactor (B) Fast breeder reactor (C) Homogeneous reactor (D) Pressurised water reactor

Last Answer : (B) Fast breeder reactor

Which of the following has the lowest Prandtl number? (A) Molten sodium (a coolant used in fast breeder reactor) (B) Water (C) Transformer oil (D) Dilute H2SO4

Description : Which of the following has the lowest Prandtl number? (A) Molten sodium (a coolant used in fast breeder reactor) (B) Water (C) Transformer oil (D) Dilute H2SO4

Last Answer : (A) Molten sodium (a coolant used in fast breeder reactor)

Centrifugal pump can't be used to pump (A) Molten sodium (used as a coolant in Fast Breeder Reactor) (B) Moderately viscous vegetable oil used in soap industry (C) Thick molten soap at 80°C (D) None of the above

Description : Centrifugal pump can't be used to pump (A) Molten sodium (used as a coolant in Fast Breeder Reactor) (B) Moderately viscous vegetable oil used in soap industry (C) Thick molten soap at 80°C (D) None of the above

Last Answer : (C) Thick molten soap at 80°C