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

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
by

1 Answer

Answer :

(C) 3
by

Related questions

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

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

U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about __________ percent. (A) 85(B) 50 (C) 3 (D) 97

Description : U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about __________ percent. (A) 85 (B) 50 (C) 3 (D) 97

Last Answer : (C) 3

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

Heat is generated in a nuclear reactor (thermal) by (A) Combustion of a nuclear fuel e.g. uranium (B) Fusion of atoms of uranium (C) Absorption of neutrons in uranium atoms (D) Fission of U-235 by neutrons

Description : Heat is generated in a nuclear reactor (thermal) by (A) Combustion of a nuclear fuel e.g. uranium (B) Fusion of atoms of uranium (C) Absorption of neutrons in uranium atoms (D) Fission of U-235 by neutrons

Last Answer : (D) Fission of U-235 by neutrons

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

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

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

Which of the following is a non-fissile material? (A) Plutonium-239 (B) Uranium-235 (C) Uranium-233 (D) Thorium-232

Description : Which of the following is a non-fissile material? (A) Plutonium-239 (B) Uranium-235 (C) Uranium-233 (D) Thorium-232

Last Answer : (D) Thorium-232

Quantity of fissionable material (i.e. U-235) in natural uranium is __________ percent. (A) 0.71 (B) 6.31 (C) 99.29 (D) 12.73

Description : Quantity of fissionable material (i.e. U-235) in natural uranium is __________ percent. (A) 0.71 (B) 6.31 (C) 99.29 (D) 12.73

Last Answer : (A) 0.71

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

The isotope of Uranium used in atomic reactors is – (1) U^235 (2) (2) U^236 (3) U^237 (4) U^232

Description : The isotope of Uranium used in atomic reactors is – (1) U^235 (2) (2) U^236 (3) U^237 (4) U^232

Last Answer : (1) U^235 Explanation: A nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. Most commonly they are used for generating electricity and for the propulsion of ships ... fissile atomic nucleus such as U235 or U239 absorbs a neutron, it may undergo nuclear fission.

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

Nuclear fuel usually used in a Boiling Water Reactor (BWR) is (A) Plutonium (B) Enriched uranium (C) Natural uranium (D) Thorium

Description : Nuclear fuel usually used in a Boiling Water Reactor (BWR) is (A) Plutonium (B) Enriched uranium (C) Natural uranium (D) Thorium

Last Answer : (B) Enriched uranium

The most commonly used nuclear fuel in boiling water reactor is (A) Enriched uranium (B) Natural uranium (C) Plutonium

Description : The most commonly used nuclear fuel in boiling water reactor is (A) Enriched uranium (B) Natural uranium (C) Plutonium

Last Answer : (A) Enriched uranium

Reactors in commercial nuclear power plants in the U.S. are often referred to as thermal reactors. A thermal reactor uses: w) fissionable plutonium-239 as fuel. x) a relatively low heat output. y) neutrons moderated to relatively low energies. z) liquid sodium as a coolant.

Description : Reactors in commercial nuclear power plants in the U.S. are often referred to as thermal reactors. A thermal reactor uses: w) fissionable plutonium-239 as fuel. x) a relatively low heat output. y) neutrons moderated to relatively low energies. z) liquid sodium as a coolant.

Last Answer : ANSWER: Y -- NEUTRONS MODERATED TO RELATIVELY LOW ENERGIES.

Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher (A) Melting point, hence can be subjected to higher temperature (B) Density; hence core volume for a given power output would be smaller (C) Resistance to effects of irradiation (D) All (A), (B) and (C)

Description : Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher (A) Melting point, hence can be subjected to higher temperature (B) Density; hence core volume for a given ... be smaller (C) Resistance to effects of irradiation (D) All (A), (B) and (C)

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

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

Because uranium 235 isn't found naturally in large quantities, engineers increase its concentration in nuclear fuel so that a chain reaction is more likely to occur. What is the name of this process?

Description : Because uranium 235 isn't found naturally in large quantities, engineers increase its concentration in nuclear fuel so that a chain reaction is more likely to occur. What is the name of this process?

Last Answer : Enrichment

Radioactive isotope of Uranium used in Nuclear Bomb is ? A.92 U 235 (Answer) B.92 U 234 C. 92 U 233 D. 92 U 238

Description : Radioactive isotope of Uranium used in Nuclear Bomb is ? A.92 U 235 (Answer) B.92 U 234 C. 92 U 233 D. 92 U 238

Last Answer : A.92 U 235 (Answer)

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

Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV. (A) 20 (B) 200 (C) 500 (D) 2000

Description : Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV. (A) 20 (B) 200 (C) 500 (D) 2000

Last Answer : (B) 200

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

Description : 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

Last Answer : (B) Breeder

Thermal shield is used in high powered nuclear reactors to (A) Protect the walls of the reactor from radiation damageB) Absorb the fast neutrons(C) Slow down the secondary neutrons(D) Protect the fuel element from coming in contact with the coolant

Description : Thermal shield is used in high powered nuclear reactors to (A) Protect the walls of the reactor from radiation damage B) Absorb the fast neutrons (C) Slow down the secondary neutrons (D) Protect the fuel element from coming in contact with the coolant

Last Answer : (A) Protect the walls of the reactor from radiation damage

A fast reactor uses: w) an extremely short time to get to the maximum operating reactivity. x) uranium-235 as fuel. y) heavy water as a coolant. z) essentially unmoderated neutrons.

Description : A fast reactor uses: w) an extremely short time to get to the maximum operating reactivity. x) uranium-235 as fuel. y) heavy water as a coolant. z) essentially unmoderated neutrons.

Last Answer : ANSWER: Z -- ESSENTIALLY UNMODERATED NEUTRONS.

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

Fuel for a nuclear reactor (thermal) is(A) Uranium(B) Plutonium(C) Radium(D) None of these

Description : Fuel for a nuclear reactor (thermal) is (A) Uranium (B) Plutonium (C) Radium (D) None of these

Last Answer : (A) Uranium

Fuel for a nuclear reactor (thermal) is (A) Uranium (B) Plutonium (C) Radium (D) None of these

Description : Fuel for a nuclear reactor (thermal) is (A) Uranium (B) Plutonium (C) Radium (D) None of these

Last Answer : (A) Uranium

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

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

Which of the following isotopes is not present in natural uranium? (A) U-238 (B) U-234 (C) U-235 (D) U-232

Description : Which of the following isotopes is not present in natural uranium? (A) U-238 (B) U-234 (C) U-235 (D) U-232

Last Answer : (D) U-232

Enrichment of uranium is done to increase the concentration of__________ in the natural uranium.(A) U-238(B) U-233(C) U-235(D) Pu-239

Description : Enrichment of uranium is done to increase the concentration of__________ in the natural uranium. (A) U-238 (B) U-233 (C) U-235 (D) Pu-239

Last Answer : (C) U-235

Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around __________ m/sec. (A) 1 (B) 2200 (C) 3 × 10 11 (D) 9 × 10 21

Description : Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around __________ m/sec. (A) 1 (B) 2200 (C) 3 × 10 11 (D) 9 × 10 21

Last Answer : (B) 2200

Thermal neutrons which are used to cause the fission of U-235 haveenergy __________ eV.(A) < 0.025(B) > 1(C) 1-25(D) > 200

Description : Thermal neutrons which are used to cause the fission of U-235 haveenergy __________ eV. (A) < 0.025 (B) > 1 (C) 1-25 (D) > 200

Last Answer : (A) < 0.025

This natural fiber obtained from the stems of a plant of the nettle family has found popularity in modern fibers with a high wet strength, absorbent but dries quickly, it can be spun or woven, has a high rot and mildew resistance and elasticity 50 percent greater than that of CHEM-92; Multiple Choice: What transuranic element is often used in satellites as a source of heat or power? w) Plutonium-238 x) Strontium-90 y) Cesium-137 z) Uranium-235

Description : This natural fiber obtained from the stems of a plant of the nettle family has found popularity in modern fibers with a high wet strength, absorbent but dries quickly, it can be spun or woven, has a high rot ... a source of heat or power? w) Plutonium-238 x) Strontium-90 y) Cesium-137 z) Uranium-235

Last Answer : ANSWER: W -- PLUTONIUM-238

Let us consider emission of `alpha`particle from uranium nucleus: `._(92)^(235)U - ._(2)He^(4) to ._(90)Th^(231)` `{:(e = 92, e = 0, e = 90),(p = 92,

Description : Let us consider emission of `alpha`particle from uranium nucleus: `._(92)^(235)U - ._(2)He^(4) to ._(90)Th^(231)` `{:(e = 92, e = 0, e = 90),(p = 92,

Last Answer : Let us consider emission of `alpha`particle from uranium nucleus: `._(92)^(235)U - ._( ... evolve energy C. annihilation D. absorption in the nucleus

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

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

Out of the following, nucleus of __________ atom contains the largest number of neutrons. (A) U-235 (B) U-238 (C) U-239 (D) Pu-239

Description : Out of the following, nucleus of __________ atom contains the largest number of neutrons. (A) U-235 (B) U-238 (C) U-239 (D) Pu-239

Last Answer : (C) U-239

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)

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

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

Natural uranium consists of `.^(235)U`:

Description : Natural uranium consists of `.^(235)U`:

Last Answer : Natural uranium consists of `.^(235)U`: A. 0.99 B. 0.5 C. 0.1 D. 0.007

A uranium nucleus `.^(235)U` liberates 200 MeV per fission 1.5 kg of uranium reacts during explosion of a uranium bomb. What is the mass of an equival

Description : A uranium nucleus `.^(235)U` liberates 200 MeV per fission 1.5 kg of uranium reacts during explosion of a uranium bomb. What is the mass of an equival

Last Answer : A uranium nucleus `.^(235)U` liberates 200 MeV per fission 1.5 kg of uranium reacts during explosion of a uranium ... TNT is `4.1 xx 10^(6) J//kg` ?

The isotope of Uranium capable of sustaining chain reaction is - (1) U-235 (2) U-238 (3) U-239 (4) N.O.T.

Description : The isotope of Uranium capable of sustaining chain reaction is - (1) U-235 (2) U-238 (3) U-239 (4) N.O.T.

Last Answer : (1) U-235 Explanation: Uranium is a chemical element with symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table.

The form of the fuel in U.S. commercial nuclear power plants is which of the following: w) uranium oxide ceramic pellets x) atomic vapor y) uranium metal tubes z) uranium solution in water

Description : The form of the fuel in U.S. commercial nuclear power plants is which of the following: w) uranium oxide ceramic pellets x) atomic vapor y) uranium metal tubes z) uranium solution in water

Last Answer : ANSWER: W -- URANIUM OXIDE CERAMIC PELLETS

Fast breeder reactors are most usable in India, because of our largest __________ deposits. (A) Thorium (B) Plutonium (C) Uranium (D) None of these

Description : Fast breeder reactors are most usable in India, because of our largest __________ deposits. (A) Thorium (B) Plutonium (C) Uranium (D) None of these

Last Answer : (A) Thorium

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

Spent fuel from the nuclear thermal reactor contains (A) Fission products (B) Plutonium (C) Unused fuel (D) All (A), (B) & (C

Description : Spent fuel from the nuclear thermal reactor contains (A) Fission products (B) Plutonium (C) Unused fuel (D) All (A), (B) & (C

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

India and __________ signed a long-term contract supply of uranium ore concentrates to widen its source base for the nuclear fuel: (a) Canada (b) USA (c) Uzbekistan (d) None of These

Description : India and __________ signed a long-term contract supply of uranium ore concentrates to widen its source base for the nuclear fuel: (a) Canada (b) USA (c) Uzbekistan (d) None of These

Last Answer : Uzbekistan