The main purpose of control rod in a nuclear reactor is to control the
The main purpose of control rod in a nuclear reactor is to control the
MeV is the unit of
MeV is the unit of
The specific heats of three gaseous coolants namely H₂, He and CO₂ in the increasing order are
The specific heats of three gaseous coolants namely H₂, He and CO₂ in the increasing order are
Pick out the wrong statement.
Pick out the wrong statement.
Pick out the correct statement.
Pick out the correct statement.
Which of the following is not used as a moderator in nuclear reactor?
Which of the following is not used as a moderator in nuclear reactor?
The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?
The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?
Research reactors are normally meant for
Research reactors are normally meant for
Which of the following is a moderating material used in nuclear reactor?
Which of the following is a moderating material used in nuclear reactor?
The atomic mass of an element is fractional, because
The atomic mass of an element is fractional, because
Secondary cooling circuit is a must in molten sodium cooled fast breeder reactor for
Secondary cooling circuit is a must in molten sodium cooled fast breeder reactor for
H₂ is a better coolant than CO₂, due to its relatively
H₂ is a better coolant than CO₂, due to its relatively
Main source of __________ is monazite sand.
Main source of __________ is monazite sand.
Commercial power generation from fusion reactor is not yet possible, because
Commercial power generation from fusion reactor is not yet possible, because
Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor?
Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor?
The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is
The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is
Pick out the wrong statement.
Pick out the wrong statement.
Which one is different for the neutral atoms of the isotopes of an element?
Which one is different for the neutral atoms of the isotopes of an element?
Uranium Corporation of India Limited (UCIL) engaged in the mining & concentration of uranium ore is located at
Uranium Corporation of India Limited (UCIL) engaged in the mining & concentration of uranium ore is located at
A moderator __________ the neutrons.
A moderator __________ the neutrons.
Molten sodium is used as a coolant in a fast breeder reactor, because of its
Molten sodium is used as a coolant in a fast breeder reactor, because of its
Pick out the wrong statement.
Pick out the wrong statement.
A pressurised water reactor (PWR) uses pressurised water as a
A pressurised water reactor (PWR) uses pressurised water as a
In the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous
In the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous
The phenomenon of nuclear fission is opposite to that of
The phenomenon of nuclear fission is opposite to that of
Which of the following types of nuclear reactors is most prone to radioactive hazards?
Which of the following types of nuclear reactors is most prone to radioactive hazards?
Pressure of CO₂ gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm² .
Pressure of CO₂ gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm² .
The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is
The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is
The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then
The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then
Fast breeder reactors do not
Fast breeder reactors do not
Neutrons have mass approximately equal to that of __________ atoms.
Neutrons have mass approximately equal to that of __________ atoms.
Molten sodium (as a coolant in fast breeder reactor)
Molten sodium (as a coolant in fast breeder reactor)
The half life period of a radiactive element is 100 days. After 400 days, one gm of the element will be reduced to __________ gm.
The half life period of a radiactive element is 100 days. After 400 days, one gm of the element will be reduced to __________ gm.
__________ gas is normally not used as a coolant in a nuclear reactor, because of its high neutron capture cross-section.
__________ gas is normally not used as a coolant in a nuclear reactor, because of its high neutron capture cross-section.
Uranium ore is currently mined & concentrated at
Uranium ore is currently mined & concentrated at
Positron is a/an
Positron is a/an
One 'amu' is equivalent to
One 'amu' is equivalent to
Which of the following is a non-fissile material?
Which of the following is a non-fissile material?
A nuclear reactor can't be used for
A nuclear reactor can't be used for
Nuclear power generation capacity in India is
Nuclear power generation capacity in India is
In a pressurised water reactor (PWR), the
In a pressurised water reactor (PWR), the
Which one is different for the neutral atoms of the isotopes of an element?
Which one is different for the neutral atoms of the isotopes of an element?
Which of the following factors is the most important in the site selection for a nuclear power plant?
Which of the following factors is the most important in the site selection for a nuclear power plant?
Which is used as a coolant in nuclear reactor due to its high capture cross-section?
Which is used as a coolant in nuclear reactor due to its high capture cross-section?
Emission of β-particles during radioactive decay of a substance is from
Emission of β-particles during radioactive decay of a substance is from
Nucleus of tritium has __________ neutrons.
Nucleus of tritium has __________ neutrons.
A fertile material is the one, which can be
A fertile material is the one, which can be
Pick out the wrong statement.
Pick out the wrong statement.
Thermal shield is used in high powered nuclear reactors to
Thermal shield is used in high powered nuclear reactors to
Pick out the wrong statement.
Pick out the wrong statement.
First experimental observation of nuclear fission was done by
First experimental observation of nuclear fission was done by
Which of the following is not a naturally occurring nuclear fuel?
Which of the following is not a naturally occurring nuclear fuel?
Energy produced in the nuclear fission is of the order of __________ MeV.
Energy produced in the nuclear fission is of the order of __________ MeV.
Fast breeder reactors are most usable in India, because of our largest __________ deposits.
Fast breeder reactors are most usable in India, because of our largest __________ deposits.
Which of the following is not, a fertile material?
Which of the following is not, a fertile material?
How many atoms are present in one gm-atom of an element?
How many atoms are present in one gm-atom of an element?
Which one is radioactive in nature?
Which one is radioactive in nature?
Enriched uranium means that, it contains
Enriched uranium means that, it contains
Which of the following radiations is the least penetrating?
Which of the following radiations is the least penetrating?
Heavy water has maximum density at __________ °C.
Heavy water has maximum density at __________ °C.
The decay product of tritium (a beta emitter) is
The decay product of tritium (a beta emitter) is
Final product of uranium extraction plant at Jadugoda (Bihar) is
Final product of uranium extraction plant at Jadugoda (Bihar) is
Which of the following may not need a control rod?
Which of the following may not need a control rod?
Gas cooling as compared to water cooling of nuclear reactors
Gas cooling as compared to water cooling of nuclear reactors
Nuclear fuel complex, Hyderabad is engaged in the job of
Nuclear fuel complex, Hyderabad is engaged in the job of
Ordinary water is not used as a moderator because, it
Ordinary water is not used as a moderator because, it
The number of neutrons accompanying the formation of 54Xe139 and 38Sr94 from the absorption of a slow neutron by 92U235 , followed by nuclear fission is
The number of neutrons accompanying the formation of 54Xe139 and 38Sr94 from the absorption of a slow neutron by 92U235 , followed by nuclear fission is
'Heavy water' is termed as 'heavy' because it is
'Heavy water' is termed as 'heavy' because it is
Which of the following reactors is operated at high neutron flux and low power level?
Which of the following reactors is operated at high neutron flux and low power level?
The most commonly used nuclear fuel in boiling water reactor is
The most commonly used nuclear fuel in boiling water reactor is
The electric power generation cost in nuclear power plant is less than that in a coal based thermal power plant, mainly because the
The electric power generation cost in nuclear power plant is less than that in a coal based thermal power plant, mainly because the
Net efficiency of ordinary light water cooled nuclear reactor is about __________ percent.
Net efficiency of ordinary light water cooled nuclear reactor is about __________ percent.
Hydrogen differs from deuterium in __________ properties.
Hydrogen differs from deuterium in __________ properties.
Radioactive decay of a material involves a __________ order reaction.
Radioactive decay of a material involves a __________ order reaction.
Out of the following, nucleus of __________ atom contains the largest number of neutrons.
Out of the following, nucleus of __________ atom contains the largest number of neutrons.
Liquid metal (e.g, . molten sodium) is preferred as a coolant in case of a/an __________ reactor.
Liquid metal (e.g, . molten sodium) is preferred as a coolant in case of a/an __________ reactor.
'Light water' used as a coolant in nuclear reactor is nothing but
'Light water' used as a coolant in nuclear reactor is nothing but
Artificially produced radioactive isotopes are used for
Artificially produced radioactive isotopes are used for
If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same istotope will be __________ days.
If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same istotope will be __________ days.
75% of a radioactive element decays in 6 hours. Its half life period is __________ hours.
75% of a radioactive element decays in 6 hours. Its half life period is __________ hours.
Isotopes of an element have the same
Isotopes of an element have the same
Hydrogen has __________ isotopes.
Hydrogen has __________ isotopes.
Heavy water is used as a moderator in a
Heavy water is used as a moderator in a
What is the average life of a radioactive atom having a 'half life period' of T?
What is the average life of a radioactive atom having a 'half life period' of T?
Pick out the wrong statement.
Pick out the wrong statement.
Which of the following undergoes fission reaction easily?
Which of the following undergoes fission reaction easily?
A heterogeneous reactor is the one, in which the moderator and the
A heterogeneous reactor is the one, in which the moderator and the
Which of the following nuclear materials is fissile?
Which of the following nuclear materials is fissile?
Indian monazite sand contains __________ percent thorium.
Indian monazite sand contains __________ percent thorium.
Nuclear reactors are provided with shield to guard against the emission of mainly __________ rays.
Nuclear reactors are provided with shield to guard against the emission of mainly __________ rays.
The half life period of a radioactive element depends on its
The half life period of a radioactive element depends on its
Which one is the radioactive isotope of hydrogen?
Which one is the radioactive isotope of hydrogen?
Which of the following is not an ore of uranium?
Which of the following is not an ore of uranium?
Pick out the wrong statement.
Pick out the wrong statement.
Percentage of heavy water in ordinary water is around
Percentage of heavy water in ordinary water is around
Which of the following may not need a moderator?
Which of the following may not need a moderator?
Pick out the wrong statement.
Pick out the wrong statement.
Isotopes of an element have different
Isotopes of an element have different
The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be __________ percent.
The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be __________ percent.
