Water is a better coolant than a gas (like CO₂, He, N₂ etc.), because it

Is a better neutron moderator as well

Requires comparatively smaller pumps and heat exchanger for a given heat transfer rate

Has a better heat transfer characteristics, and it can be pressurised to attain a high temperature

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%!

It will completely disintegrate in four months

3/4th of it will disintegrate in two months

It will completely disintegrate in two months

It will completely disintegrate in four months

L/8th of it will remain intact at the end of four months

Bhabha Atomic Research Centre (BARC) located at Trombay (near Bombay) has%!

Five operating research reactors (namely Apsara, Cirus Zerelina, Purnima and Dhurva)

A very large capacity (100 tons/yr) heavy water plant

Fast breeder reactors do not%!

Convert fertile material to fissile material

Fission of U-235 on slow neutron bombardment can be represented by%!

92U235 + 0n1 ‚Äö√ú√≠ 92U236 + 3 0n1+ Q (energy)

92U235 + 0n1 ‚Äö√ú√≠ 56Ba143 + 36Kr90

92U235 + 0n1 ‚Äö√ú√≠ 56Ba143 + 36Kr90 + 3 0n1

92U235 + 0n1 ‚Äö√ú√≠ 56Ba143 + 36Kr90 + 3 0n1 + Q (energy)

92U235 + 0n1 ‚Äö√ú√≠ 92U236 + 3 0n1+ Q (energy)

Heavy water used in the nuclear reactors to slow down the speed of neutrons is%!

Water having dissolved salts of heavy metals

A compound of oxygen and deuterium

Water having dissolved salts of heavy metals

Should have small absorption cross-section

Is generally made of boron, hafnium or cadmium

Should have large absorption cross-section

Graphite is used in nuclear reactor as%!

Insulation lining of the reactor

The mass number of an element is equal to the number of __________ in the nucleus.%!

Neutrons plus protons (i.e., nucleons)

Should have small absorption cross-section

Is generally made of boron, hafnium or cadmium

Should have large absorption cross-section

*$_Bhabha Atomic Research Centre (BARC) located at Trombay (near Bombay) has?

Five operating research reactors (namely Apsara, Cirus Zerelina, Purnima and Dhurva)

A very large capacity (100 tons/yr) heavy water plant

*$_Fission of U-235 on slow neutron bombardment can be represented by?

92U235 + 0n1 ‚Äö√ú√≠ 92U236 + 3 0n1+ Q (energy)

92U235 + 0n1 ‚Äö√ú√≠ 56Ba143 + 36Kr90

92U235 + 0n1 ‚Äö√ú√≠ 56Ba143 + 36Kr90 + 3 0n1

92U235 + 0n1 ‚Äö√ú√≠ 56Ba143 + 36Kr90 + 3 0n1 + Q (energy)

92U235 + 0n1 ‚Äö√ú√≠ 92U236 + 3 0n1+ Q (energy)

486 + Mcqs in Nuclear Power Engineering in Chemical Engineering Page 2 McqOptions

51.	Water is a better coolant than a gas (like CO₂, He, N₂ etc.), because it
A.	Is a better neutron moderator as well
B.	Requires comparatively smaller pumps and heat exchanger for a given heat transfer rate
C.	Has a better heat transfer characteristics, and it can be pressurised to attain a high temperature
D.	All of the above
Answer» E.

Discussion

52.	Which of the following is a fuel for a fusion reactor (thermonuclear reactor)?
A.	Deuterium and tritium
B.	U-233
C.	Thorium
D.	Heavy water
Answer» B. U-233

Discussion

53.	The half life period of a radioactive element depends upon the
A.	Temperature
B.	Pressure
C.	Amount of element present
D.	None of these
Answer» E.

Discussion

54.	Which of the following is not used as a nuclear fuel cladding material?
A.	Zircalloy
B.	Cadmium
C.	Ceramics
D.	Stainless steel
Answer» C. Ceramics

Discussion

55.	Which is a fertile nuclear fuel?
A.	U-233
B.	U-235
C.	Pu-239
D.	Th-232
Answer» E.

Discussion

56.	Which of the following ores contains maximum percentage of uranium?
A.	Carnotite
B.	Thorium
C.	Rescolite
D.	Pitchblende
Answer» E.

Discussion

57.	Thorium⁻²32 is converted into uranium⁻²33 in a/an __________ nuclear reactor.
A.	Thermal
B.	Fast breeder
C.	Heavy water moderated
D.	Enriched uranium
Answer» C. Heavy water moderated

Discussion

58.	β-rays emission in radioactive disintegration is always accompanied by the emission of
A.	γ-rays
B.	α-rays
C.	Neutrons
D.	None of these
Answer» B. α-rays

Discussion

59.	Primary purpose of a __________ nuclear reactor is to supply a high neutron flux of the order of 10¹³ to 10¹⁴ neutrons/cm² second.
A.	Research
B.	Power
C.	Breeder
D.	Homogeneous
Answer» B. Power

Discussion

60.	Nucleus of 92U235 contains __________ protons.
A.	92
B.	235
C.	143
D.	325
Answer» B. 235

Discussion

61.	The 92U238 emits an a-particle. The product is
A.	90U234
B.	90U238
C.	90U236
D.	92U236
Answer» B. 90U238

Discussion

62.	Heavy water (D₂O) in a nuclear reactor serves as a
A.	Coolant
B.	Moderator
C.	Both A & B
D.	Neutron absorber
Answer» D. Neutron absorber

Discussion

63.	The new nucleus formed after ≈í‚â§-decay of a radioactive element has~!
A.	Less atomic number
B.	Less atomic weight
C.	More atomic number
D.	More atomic weight
Answer» B. Less atomic weight

Discussion

64.	Pressure of CO‚Äö√á√á gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm¬¨‚â§ .%!
A.	0.2
B.	7
C.	35
D.	50
Answer» B. 7

Discussion

65.	The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be __________ percent.%!
A.	3.125
B.	6.25
C.	12.50
D.	25
Answer» C. 12.50

Discussion

66.	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%!
A.	3/4th of it will disintegrate in two months
B.	It will completely disintegrate in two months
C.	It will completely disintegrate in four months
D.	L/8th of it will remain intact at the end of four months
Answer» C. It will completely disintegrate in four months

Discussion

67.	Emission of ≈í‚â§-particles during radioactive decay of a substance is from%!
A.	Innermost shell
B.	Nucleus
C.	Outermost shell
D.	None of these
Answer» C. Outermost shell

Discussion

68.	Which of the following is not used as a nuclear fuel cladding material?%!
A.	Zircalloy
B.	Cadmium
C.	Ceramics
D.	Stainless steel
Answer» C. Ceramics

Discussion

69.	Bhabha Atomic Research Centre (BARC) located at Trombay (near Bombay) has%!
A.	Five operating research reactors (namely Apsara, Cirus Zerelina, Purnima and Dhurva)
B.	A 420 MW nuclear power plant
C.	A very large capacity (100 tons/yr) heavy water plant
D.	All of the above
Answer» B. A 420 MW nuclear power plant

Discussion

70.	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
Answer» B. Convert fertile material to fissile material

Discussion

71.	Which of the following may not need a control rod?%!
A.	Liquid metal cooled reactor
B.	Fast breeder reactor
C.	Candu reactor
D.	None of these
Answer» E.

Discussion

72.	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
Answer» D. Pu-239

Discussion

73.	Fission of U-235 on slow neutron bombardment can be represented by%!
A.	92U235 + 0n1 ‚Äö√ú√≠ 56Ba143 + 36Kr90
B.	92U235 + 0n1 ‚Äö√ú√≠ 56Ba143 + 36Kr90 + 3 0n1
C.	92U235 + 0n1 ‚Äö√ú√≠ 56Ba143 + 36Kr90 + 3 0n1 + Q (energy)
D.	92U235 + 0n1 ‚Äö√ú√≠ 92U236 + 3 0n1+ Q (energy)
Answer» D. 92U235 + 0n1 ‚Äö√ú√≠ 92U236 + 3 0n1+ Q (energy)

Discussion

74.	Number of secondary neutron emitted on fission of an atom of U-235 by slow neutron bombardment is%!
A.	3
B.	235
C.	200
D.	92
Answer» B. 235

Discussion

75.	Percentage of heavy water in ordinary water is around%!
A.	0.015
B.	7.54
C.	0.71
D.	32.97
Answer» B. 7.54

Discussion

76.	Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor?%!
A.	Molten sodium cooled
B.	CO‚Äö√á√á gas cooled
C.	Pressurised water
D.	Boiling water
Answer» E.

Discussion

77.	Nuclides having the same atomic numbers are termed as%!
A.	Isotopes
B.	Isomers
C.	Isotones
D.	Isobars
Answer» C. Isotones

Discussion

78.	Heavy water used in the nuclear reactors to slow down the speed of neutrons is%!
A.	Highly purified water
B.	A compound of oxygen and deuterium
C.	Water having dissolved salts of heavy metals
D.	None of these
Answer» C. Water having dissolved salts of heavy metals

Discussion

79.	The atomic number of an element is equal to the number of __________ present in its atom.%!
A.	Neutrons
B.	Electrons
C.	Protons
D.	Either B or C
Answer» E.

Discussion

80.	Primary purpose of a __________ nuclear reactor is to supply a high neutron flux of the order of 10¬¨œÄ¬¨‚â• to 10¬¨œÄ‚Äö√Ö¬• neutrons/cm¬¨‚â§ second.%!
A.	Research
B.	Power
C.	Breeder
D.	Homogeneous
Answer» B. Power

Discussion

81.	A control rod%!
A.	Should have small absorption cross-section
B.	Is generally made of boron, hafnium or cadmium
C.	Should have large absorption cross-section
D.	Both B and C
Answer» E.

Discussion

82.	A radioactive substance does not emit%!
A.	≈í√´-ray
B.	Proton
C.	Position
D.	≈í√≠-ray
Answer» C. Position

Discussion

83.	Fast breeder test reactor at Kalpakkam 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
Answer» B. U-238 as a fertile material

Discussion

84.	The time taken for a radioactive element to reduce to 50% of its original weight is __________ years, if its half life period is 12 years.%!
A.	24
B.	18
C.	6
D.	36
Answer» C. 6

Discussion

85.	Graphite is used in nuclear reactor as%!
A.	Insulation lining of the reactor
B.	Fuel
C.	Lubricant
D.	Retarder of neutron velocity
Answer» E.

Discussion

86.	The mass number of an element is equal to the number of __________ in the nucleus.%!
A.	Electrons
B.	Neutrons
C.	Protons
D.	Neutrons plus protons (i.e., nucleons)
Answer» E.

Discussion

87.	When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as%!
A.	Isomers
B.	Isotopes
C.	Isobars
D.	Isotones
Answer» E.

Discussion

88.	The radioisotope used to study the thyroid gland is%!
A.	Iodine
B.	Cobalt
C.	Iron
D.	Carbon
Answer» B. Cobalt

Discussion

89.	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
Answer» D. Pu-239

Discussion

90.	*$_A control rod?
A.	Should have small absorption cross-section
B.	Is generally made of boron, hafnium or cadmium
C.	Should have large absorption cross-section
D.	Both B and C
Answer» E.

Discussion

91.	*$_Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor??
A.	Molten sodium cooled
B.	CO‚Äö√á√á gas cooled
C.	Pressurised water
D.	Boiling water
Answer» E.

Discussion

92.	*$_Percentage of heavy water in ordinary water is around?
A.	0.015
B.	7.54
C.	0.71
D.	32.97
Answer» B. 7.54

Discussion

93.	*$_Bhabha Atomic Research Centre (BARC) located at Trombay (near Bombay) has?
A.	Five operating research reactors (namely Apsara, Cirus Zerelina, Purnima and Dhurva)
B.	A 420 MW nuclear power plant
C.	A very large capacity (100 tons/yr) heavy water plant
D.	All of the above
Answer» B. A 420 MW nuclear power plant

Discussion

94.	*$_Nuclides having the same atomic numbers are termed as?
A.	Isotopes
B.	Isomers
C.	Isotones
D.	Isobars
Answer» C. Isotones

Discussion

95.	*$_Number of secondary neutron emitted on fission of an atom of U-235 by slow neutron bombardment is?
A.	3
B.	235
C.	200
D.	92
Answer» B. 235

Discussion

96.	*$_Which of the following is not used as a nuclear fuel cladding material??
A.	Zircalloy
B.	Cadmium
C.	Ceramics
D.	Stainless steel
Answer» C. Ceramics

Discussion

97.	*$_Fission of U-235 on slow neutron bombardment can be represented by?
A.	92U235 + 0n1 ‚Äö√ú√≠ 56Ba143 + 36Kr90
B.	92U235 + 0n1 ‚Äö√ú√≠ 56Ba143 + 36Kr90 + 3 0n1
C.	92U235 + 0n1 ‚Äö√ú√≠ 56Ba143 + 36Kr90 + 3 0n1 + Q (energy)
D.	92U235 + 0n1 ‚Äö√ú√≠ 92U236 + 3 0n1+ Q (energy)
Answer» D. 92U235 + 0n1 ‚Äö√ú√≠ 92U236 + 3 0n1+ Q (energy)

Discussion

98.	/_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
Answer» D. Pu-239

Discussion

99.	/_Heavy water plant is not located at?
A.	Kota and Baroda
B.	Talcher (Orissa)
C.	Tuticorin(Tamilnadu)
D.	Korba
Answer» E.

Discussion

100.	/_The radioisotope used to study the thyroid gland is?
A.	Iodine
B.	Cobalt
C.	Iron
D.	Carbon
Answer» B. Cobalt

Discussion

Explore topic-wise MCQs in Chemical Engineering.

Water is a better coolant than a gas (like CO₂, He, N₂ etc.), because it

Which of the following is a fuel for a fusion reactor (thermonuclear reactor)?

The half life period of a radioactive element depends upon the

Which of the following is not used as a nuclear fuel cladding material?

Which is a fertile nuclear fuel?

Which of the following ores contains maximum percentage of uranium?

Thorium⁻²32 is converted into uranium⁻²33 in a/an __________ nuclear reactor.

β-rays emission in radioactive disintegration is always accompanied by the emission of

Primary purpose of a __________ nuclear reactor is to supply a high neutron flux of the order of 10¹³ to 10¹⁴ neutrons/cm² second.

Nucleus of 92U235 contains __________ protons.

The 92U238 emits an a-particle. The product is

Heavy water (D₂O) in a nuclear reactor serves as a

The new nucleus formed after ≈í‚â§-decay of a radioactive element has~!

Pressure of CO‚Äö√á√á gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm¬¨‚â§ .%!

The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be __________ percent.%!

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%!

Emission of ≈í‚â§-particles during radioactive decay of a substance is from%!

Which of the following is not used as a nuclear fuel cladding material?%!

Bhabha Atomic Research Centre (BARC) located at Trombay (near Bombay) has%!

Fast breeder reactors do not%!

Which of the following may not need a control rod?%!

Out of the following, nucleus of __________ atom contains the largest number of neutrons.%!

Fission of U-235 on slow neutron bombardment can be represented by%!

Number of secondary neutron emitted on fission of an atom of U-235 by slow neutron bombardment is%!

Percentage of heavy water in ordinary water is around%!

Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor?%!

Nuclides having the same atomic numbers are termed as%!

Heavy water used in the nuclear reactors to slow down the speed of neutrons is%!

The atomic number of an element is equal to the number of __________ present in its atom.%!

Primary purpose of a __________ nuclear reactor is to supply a high neutron flux of the order of 10¬¨œÄ¬¨‚â• to 10¬¨œÄ‚Äö√Ö¬• neutrons/cm¬¨‚â§ second.%!

A control rod%!

A radioactive substance does not emit%!

Fast breeder test reactor at Kalpakkam is designed for using%!

The time taken for a radioactive element to reduce to 50% of its original weight is __________ years, if its half life period is 12 years.%!

Graphite is used in nuclear reactor as%!

The mass number of an element is equal to the number of __________ in the nucleus.%!

When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as%!

The radioisotope used to study the thyroid gland is%!

Enrichment of uranium is done to increase the concentration of __________ in the natural uranium.%!

*$_A control rod?

*$_Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor??

*$_Percentage of heavy water in ordinary water is around?

*$_Bhabha Atomic Research Centre (BARC) located at Trombay (near Bombay) has?

*$_Nuclides having the same atomic numbers are termed as?

*$_Number of secondary neutron emitted on fission of an atom of U-235 by slow neutron bombardment is?

*$_Which of the following is not used as a nuclear fuel cladding material??

*$_Fission of U-235 on slow neutron bombardment can be represented by?

*/*_Enrichment of uranium is done to increase the concentration of __________ in the natural uranium.?

*/*_Heavy water plant is not located at?

*/*_The radioisotope used to study the thyroid gland is?

/_Enrichment of uranium is done to increase the concentration of __________ in the natural uranium.?

/_Heavy water plant is not located at?

/_The radioisotope used to study the thyroid gland is?