A nuclear reactor harnesses nuclear energy by A. Nuclear fusion B. Spontaneous fission C. Uncontrolled chain reaction D. Controlled chain reaction

A nuclear reactor harnesses nuclear energy by A. Nuclear fusion B. Spontaneous fission C. Uncontrolled chain reaction D. Controlled chain reaction
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ANSWER: D
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Hydrogen bomb is based on the principle of – (1) controlled fission reaction (2) uncontrolled fission reaction (3) controlled fusion reaction (4) uncontrolled fusion reaction

Description : Hydrogen bomb is based on the principle of – (1) controlled fission reaction (2) uncontrolled fission reaction (3) controlled fusion reaction (4) uncontrolled fusion reaction

Last Answer : (4) uncontrolled fusion reaction Explanation: A thermonuclear weapon is a nuclear weapon design that uses the heat generated by a fission bomb to compress a nuclear fusion stage which indirectly ... the majority of its destructive energy comes from uranium fission, not hydrogen fusion by itself.

Hydrogen bomb is based on the principle of (1) controlled fission reaction (2) uncontrolled fission reaction (3) controlled fusion reaction (4) uncontrolled fusion reaction

Description : Hydrogen bomb is based on the principle of (1) controlled fission reaction (2) uncontrolled fission reaction (3) controlled fusion reaction (4) uncontrolled fusion reaction

Last Answer : uncontrolled fusion reaction

Atomic explosion is triggered by - (1) thermo nuclear reaction (2) chemical reaction (3) controlled chain reaction (4) uncontrolled chain reaction

Description : Atomic explosion is triggered by - (1) thermo nuclear reaction (2) chemical reaction (3) controlled chain reaction (4) uncontrolled chain reaction

Last Answer : (4) uncontrolled chain reaction Explanation: During an uncontrolled nuclear chain reaction such as atomic explosion, a radioactive substance gives off energy at a rate that increases rapidly with time, ... its neighbors, in turn setting off other atoms; thus, producing large amounts of energy.

Atomic explosion is triggered by (1) thermo nuclear reaction (2) chemical reaction (3) controlled chain reaction (4) uncontrolled chain reaction

Description : Atomic explosion is triggered by (1) thermo nuclear reaction (2) chemical reaction (3) controlled chain reaction (4) uncontrolled chain reaction

Last Answer : uncontrolled 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

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

What is a controlled fission or nuclear reactor ?

Description : What is a controlled fission or nuclear reactor ?

Last Answer : Measures need to be taken to convert heat energy generated from nuclear fission into electrical energy so that huge amount of energy is generated in a very short time and the whole process does not ... energy supply is available for a long time. This is called controlled fission or nuclear reactor.

Which of the following reaction is the main cause of energy radiated from Sun? (1) Nuclear fission (2) Nuclear fusion (3) Chemical reaction (4) Diffusion reaction

Description : Which of the following reaction is the main cause of energy radiated from Sun? (1) Nuclear fission (2) Nuclear fusion (3) Chemical reaction (4) Diffusion reaction

Last Answer : (2) Nuclear fusion Explanation: The Sun is a main-sequence star, and thus generates its energy bynuclear fusion of hydrogen nuclei into helium. In its core, the Sunfuses 620 million metric tons of hydrogen each second.

The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Description : The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Last Answer : (3) Nuclear fusion Explanation: The spectrum of the Sun's solar radiation is close to that of a black body with a temperature of about 5,800 K. The Sun emits Electromagnetic radiation across ... converted to lower energy photons before they reach the Sun's surface and are emitted out into space.

Pick out the wrong statement. (A) Geothermal energy is a non-conventional source of energy (B) Mass is converted into energy in both nuclear fission & fusion reaction (C) Inhalation of mercury vapour is not harmful for human beings (D) Inhalation of arsenic causes cancer

Description : Pick out the wrong statement. (A) Geothermal energy is a non-conventional source of energy (B) Mass is converted into energy in both nuclear fission & fusion reaction (C) Inhalation of mercury vapour is not harmful for human beings (D) Inhalation of arsenic causes cancer

Last Answer : (C) Inhalation of mercury vapour is not harmful for human beings

The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Description : The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Last Answer : Nuclear fusion

Hydrogen bomb is based upon the principle of ______. (1) Nuclear fission (2) Nuclear fusion (3) Controller nuclear reaction (4) None of these

Description : Hydrogen bomb is based upon the principle of ______. (1) Nuclear fission (2) Nuclear fusion (3) Controller nuclear reaction (4) None of these

Last Answer : (2) Nuclear fusion Explanation: The hydrogen bomb eventually relies upon atomic fusion (adding to the atomic nucleus) to release energy. Nuclear fusion is a nuclear reaction in which two or more atomic nuclei ... and then collide at a very high speed and join to form a new type of atomic nucleus.

The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding

Description : The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding

Last Answer : (2) Nuclear fission Explanation: Nuclear fission is a process used to create energy. It is when an atom splits apart into smaller atoms. The process gives off a lot of energy, and is used in nuclear weapons and nuclear reactors.

The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding

Description : The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding

Last Answer : (2) Nuclear fission Explanation: Nuclear fission is a process used to create energy. It is when an atom splits apart into smaller atoms. The process gives off a lot of energy, and is used in nuclear weapons and nuclear reactors.

In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ? A. Chemical Reaction B. Nuclear reaction C. Fission nuclear reaction D. Fusion nuclear reaction (Answer) E. None of these

Description : In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear ... reaction C. Fission nuclear reaction D. Fusion nuclear reaction (Answer) E. None of these

Last Answer : D. Fusion nuclear reaction (Answer)

Plutonium Plutonium is used as _____. A. Fuel for Nuclear Fission B. Fuel for Nuclear Fusion C. Source of Chemical Energy D. Source of Light Energy

Description : Plutonium Plutonium is used as _____. A. Fuel for Nuclear Fission B. Fuel for Nuclear Fusion C. Source of Chemical Energy D. Source of Light Energy

Last Answer : ANSWER: A

Plutonium is used as _____. A. Fuel for Nuclear Fission B. Fuel for Nuclear Fusion C. Source of Chemical Energy D. Source of Light Energy

Description : Plutonium is used as _____. A. Fuel for Nuclear Fission B. Fuel for Nuclear Fusion C. Source of Chemical Energy D. Source of Light Energy

Last Answer : ANSWER: A

Plutonium is used as _____. A. Fuel for Nuclear Fission B. Fuel for Nuclear Fusion C. Source of Chemical Energy D. Source of Light Energy

Description : Plutonium is used as _____. A. Fuel for Nuclear Fission B. Fuel for Nuclear Fusion C. Source of Chemical Energy D. Source of Light Energy

Last Answer : ANSWER: A

The escape velocity from the earth’s surface is about 1. 30 km/sec 2. 6 km/sec 3. 11.2 km/sec 4. 300 km/sec 15. The radiant energy of the sun is due to (a) Nuclear fission (b) Nuclear fusion (c) Sinking of the sun (d) Violent explosions

Description : The escape velocity from the earth’s surface is about 1. 30 km/sec 2. 6 km/sec 3. 11.2 km/sec 4. 300 km/sec 15. The radiant energy of the sun is due to (a) Nuclear fission (b) Nuclear fusion (c) Sinking of the sun (d) Violent explosions

Last Answer : Ans:(c)

Energy is continuously generated in the sun due to _______. (1) Nuclear fusion (2) Nuclear fission (3) Radioactivity (4) Artificial radioactivity

Description : Energy is continuously generated in the sun due to _______. (1) Nuclear fusion (2) Nuclear fission (3) Radioactivity (4) Artificial radioactivity

Last Answer : (1) Nuclear fusion Explanation: Nuclear fusion is a nuclear reaction in which two or more atomic nuclei come very close and then collide at a very high speed and join to form a new type of atomic nucleus.

The energy of the sun is mainly due to (1) nuclear fission (2) radioactivity (3) heat (4) nuclear fusion

Description : The energy of the sun is mainly due to (1) nuclear fission (2) radioactivity (3) heat (4) nuclear fusion

Last Answer : (4) nuclear fusion Explanation: The Sun is a main-sequence star, and thus generates its energy by nuclear fusion of hydrogen nuclei into helium. Nuclear fusion is a nuclear reaction in which two ... the fusing nuclei is converted to photons which are released through a cycle that even our sun uses.

The source of the sun's energy is the process of – (1) Photoelectric emission (2) Nuclear fission (3) Nuclear fusion (4) Thermionic emission

Description : The source of the sun's energy is the process of – (1) Photoelectric emission (2) Nuclear fission (3) Nuclear fusion (4) Thermionic emission

Last Answer : (3) Nuclear fusion Explanation: The Sun formed about 4.6 billion years ago from the gravitational collapse of a region within a large molecular cloud. Most of the matter gathered in the center, ... thermonuclear fusion in its core. It is thought that almost all other stars form by this process.

Name the process of production of energy in the Sun – (1) Nuclear fission (2) Radioactivity (3) Nuclear fusion (4) Ionization

Description : Name the process of production of energy in the Sun – (1) Nuclear fission (2) Radioactivity (3) Nuclear fusion (4) Ionization

Last Answer : (3) Nuclear fusion Explanation: The source of the sun's fuel is hydrogen and helium gases. Through a special chemical reaction, called nuclear fusion, the hydrogen gas is "burned" releasing an enormous amount of energy in the form of light and heat.

The source of the Sun's energy is the process of – (1) Photoelectric emission (2) Nuclear fission (3) Nuclear fusion (4) Thermionic emission

Description : The source of the Sun's energy is the process of – (1) Photoelectric emission (2) Nuclear fission (3) Nuclear fusion (4) Thermionic emission

Last Answer : (3) Nuclear fusion Explanation: Nuclear fusion is a nuclear reaction in which two or more atomic nuclei join together, or "fuse", to form a single heavier nucleus. During this process, matter ... fusing nuclei is converted to energy which is released. Fusion is the process that powers active stars.

Energy is continuously created in the sun due to – (1) Nuclear fusion (2) Nuclear fission (3) Radioactivity (4) Artificial radioactivity

Description : Energy is continuously created in the sun due to – (1) Nuclear fusion (2) Nuclear fission (3) Radioactivity (4) Artificial radioactivity

Last Answer : (1) nuclear fusion Explanation: The central mass of the sun becomes increasingly hot and dense. eventually initiating thermonuclear fusion in its core. It is thought that almost all other stars form ... because some of the mass of the fusing nuclei is converted to energy which is released.

Differentiate between any five of the following: a) Thermoplastics and thermosetting plastics b) Lunar eclipse and solar eclipse c) Asteroid and meteorite d) Renewable and non-renewable energy resources e) Endothermic and exothermic reactions f) Star and planet g) Nuclear fission and nuclear fusion

Description : Differentiate between any five of the following: a) Thermoplastics and thermosetting plastics b) Lunar eclipse and solar eclipse c) Asteroid and meteorite d) Renewable and non-renewable energy resources e) Endothermic and exothermic reactions f) Star and planet g) Nuclear fission and nuclear fusion

Last Answer : a) Thermoplastics and thermosetting plastics: Thermoplastics: Thermoplastics can be repeatedly softened by heating and hardened by cooling.Thermoplastic molecules, which are linear or slightly branched, do ... or explode in midair. Remains of meteoroids that reach the surface are called meteorites.

The Sun produces most of its energy by-------? A. Nuclear fusion (Answer) B. nuclear fission C. Burning hydrogen D. None of these

Description : The Sun produces most of its energy by-------? A. Nuclear fusion (Answer) B. nuclear fission C. Burning hydrogen D. None of these

Last Answer : A. Nuclear fusion (Answer)

What process produces most of the energy that is radiated by the Sun? w) gravitational contraction x) chemical combustion y) nuclear fusion z) nuclear fission

Description : What process produces most of the energy that is radiated by the Sun? w) gravitational contraction x) chemical combustion y) nuclear fusion z) nuclear fission

Last Answer : ANSWER: Y -- NUCLEAR FUSION

Which of the following energy technologies is not utilized for power generation today? w) Nuclear Fission x) Solar Ponds y) Geothermal Power z) Nuclear Fusion

Description : Which of the following energy technologies is not utilized for power generation today? w) Nuclear Fission x) Solar Ponds y) Geothermal Power z) Nuclear Fusion

Last Answer : ANSWER: Z -- NUCLEAR FUSION

The energy of the sun is mainly due to (1) nuclear fission (2) radioactivity (3) heat (4) nuclear fusion

Description : The energy of the sun is mainly due to (1) nuclear fission (2) radioactivity (3) heat (4) nuclear fusion

Last Answer : nuclear fusion

Name the process of production of energy in the Sun (1) Nuclear fission (2) Radioactivity (3) Nuclear fusion (4) Ionization

Description : Name the process of production of energy in the Sun (1) Nuclear fission (2) Radioactivity (3) Nuclear fusion (4) Ionization

Last Answer : Nuclear fusion

The source of the Sun’s energy is the process of (1) Photoelectric emission (2) Nuclear fission (3) Nuclear fusion (4) Thermionic emission

Description : The source of the Sun’s energy is the process of (1) Photoelectric emission (2) Nuclear fission (3) Nuclear fusion (4) Thermionic emission

Last Answer : Nuclear fusion

Energy is continuously created in the sun due to: (1) nuclear fusion (2) nuclear fission (3) radioactivity (4) artificial radioactivity

Description : Energy is continuously created in the sun due to: (1) nuclear fusion (2) nuclear fission (3) radioactivity (4) artificial radioactivity

Last Answer : nuclear fusion

Commercial power generation from fusion reactor is not yet possible, because (A) It is difficult to control nuclear fusion reaction (B) The fuel required (i.e., deuterium & tritium) is scarce (C) It is difficult to initiate fusion reaction (D) Quantity of fuel required for initiating fusion reaction is prohibitively high

Description : Commercial power generation from fusion reactor is not yet possible, because (A) It is difficult to control nuclear fusion reaction (B) The fuel required (i.e., deuterium & tritium) is ... to initiate fusion reaction (D) Quantity of fuel required for initiating fusion reaction is prohibitively high

Last Answer : (A) It is difficult to control nuclear fusion reaction

Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission? (1) Boron (2) Heavy water (3) Uranium (4) Plutonium

Description : Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission? (1) Boron (2) Heavy water (3) Uranium (4) Plutonium

Last Answer : (1) Boron Explanation: Boron shielding is used as a control for nuclear reactors, taking advantage of its high cross-section for neutron capture. Elemental boron is rare and ... aluminium. Crystalline boron is chemicallyinert and resistant to attack by boiling hydrofluoric or hydrochloric acid.

wo elements which are used to absorb neutrons to control the chain reaction during nuclear fission are - (1) Boron and Cadmium (2) Boron and Plutonium (3) Cadmium and Uranium (4) Uranium and Boron

Description : wo elements which are used to absorb neutrons to control the chain reaction during nuclear fission are - (1) Boron and Cadmium (2) Boron and Plutonium (3) Cadmium and Uranium (4) Uranium and Boron

Last Answer : (1) Boron and Cadmium Explanation: Since the continued chain reaction of a nuclear fission reactor depends upon at least one neutron from each fission being absorbed by another fissionable nucleus, the ... and then the control rods are slowly lifted until a chain reaction can just be sustained.

What is the difference between nuclear fission and fission chain reaction.

Description : What is the difference between nuclear fission and fission chain reaction.

Last Answer : The process of splitting of nucleus into two almost equal fragments accompanied by re¬lease of heat is nuclear fission. Self sustained, continuing, sequence of fission reactions in a con¬trolled manner is fission chain reaction.

The two elements which are used to absorb the neutrons in nuclear fission during chain reaction

Description : The two elements which are used to absorb the neutrons in nuclear fission during chain reaction

Last Answer : Boran and Cadmium

Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission ? (1) Boron (2) Heavy water (3) Uranium (4) Plutonium

Description : Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission ? (1) Boron (2) Heavy water (3) Uranium (4) Plutonium

Last Answer : Boron

Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are (1) Boron and Cadmium (2) Boron and Plutonium (3) Cadmium and Uranium (4) Uranium and Boron

Description : Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are (1) Boron and Cadmium (2) Boron and Plutonium (3) Cadmium and Uranium (4) Uranium and Boron

Last Answer :  Boron and Cadmium

How is nuclear fission and fusion used in weapons?

Description : How is nuclear fission and fusion used in weapons?

Last Answer : Nuclear fission is used in nuclear weapons to create what somemight call an atomic blast (nuclear blast). Nuclear fission usedthis way can also be applied in special complex designs to generateenough thermal energy (heat) to initiate a fusion reaction. Thiscreates an even bigger nuclear blast.

How are fission and nuclear fusion similar?

Description : How are fission and nuclear fusion similar?

Last Answer : They are both nuclear reactions. That's just about it. Other than that they are completely different. Fission is the nuclear reaction when two atoms smash the living soul out of each other ... together into another compound/element, while releasing about 10 times as much energy as nuclear fission.

The basic process taking place in nuclear reactors is - (1) Radioactivity (2) Fission (3) Fusion (4) None of the above

Description : The basic process taking place in nuclear reactors is - (1) Radioactivity (2) Fission (3) Fusion (4) None of the above

Last Answer : (2) Fission Explanation: A nuclear reactor produces and controls the re-lease of energy from splitting the atoms of uranium, known as nuclear fission. When a fissile atomic nucleus such as uranium235 ... process produces free neutrons and gamma pho-tons, and releases a very large amount of energy.

An atomic pile is used for – (1) producing X-rays (2) conducting nuclear fission (3) coducting thermonuclear fusion (4) accelerating atoms

Description : An atomic pile is used for – (1) producing X-rays (2) conducting nuclear fission (3) coducting thermonuclear fusion (4) accelerating atoms

Last Answer : (2) conducting nuclear fission Explanation: An atomic pile is a nuclear reactor that uses controlled nuclear fission to generate energy. The most common reactor consists of a large assembly of graphite (an allotropic form of carbon) blocks having rods of uranium metal (fuel).

Hydrogen bomb is based on the principle of - (1) Double decomposition (2) Artificial radioactivity (3) Nuclear fission (4) Nuclear fusion

Description : Hydrogen bomb is based on the principle of - (1) Double decomposition (2) Artificial radioactivity (3) Nuclear fission (4) Nuclear fusion

Last Answer : (4) Nuclear fusion Explanation: Hydrogen Bomb is based on the principle of Nuclear Fusion. Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles.

Nuclear reactors used to produce electricity are based on – (1) Nuclear fission (2) Nuclear fusion (3) Cold fusion (4) Superconductivity

Description : Nuclear reactors used to produce electricity are based on – (1) Nuclear fission (2) Nuclear fusion (3) Cold fusion (4) Superconductivity

Last Answer : (1) Nuclear fission 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 ... (water or gas), which runs through turbines that power either ship's propellers or generators.

Artificially produced radioactive isotopes are used for (A) Power generation (B) Treatment of certain diseases (C) Initiating nuclear fission and fusion (D) All (A), (B) and (C)

Description : Artificially produced radioactive isotopes are used for (A) Power generation (B) Treatment of certain diseases (C) Initiating nuclear fission and fusion (D) All (A), (B) and (C)

Last Answer : (B) Treatment of certain diseases

The phenomenon of nuclear fission is opposite to that of (A) Radioactive decay (B) Thermionic emission (C) Nuclear fusion (D) Combustion

Description : The phenomenon of nuclear fission is opposite to that of (A) Radioactive decay (B) Thermionic emission (C) Nuclear fusion (D) Combustion

Last Answer : (C) Nuclear fusion

Mention the differences between nuclear fission and nuclear fusion.

Description : Mention the differences between nuclear fission and nuclear fusion.

Last Answer : Nuclear Fission 1. A heavy nucleus splits into two lighter nuclei with liberation of energy 2. It can be controlled. 3. It does not require high temperature. 4. It causes radiation pollution due ... the products are not radio active. 5. The energy produced is much more than that of fission.

Fuel' can be defined as a substance which produces heat by (A) Combustion (B) Nuclear fission (C) Nuclear fusion (D) All (A), (B) & (C)

Description : Fuel' can be defined as a substance which produces heat by (A) Combustion (B) Nuclear fission (C) Nuclear fusion (D) All (A), (B) & (C)

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