Description : A nuclear reactor harnesses nuclear energy by A. Nuclear fusion B. Spontaneous fission C. Uncontrolled chain reaction D. Controlled chain reaction
Last Answer : ANSWER: D
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.
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
Description : The device used to carry out fission under controlled condition is called
Last Answer : 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.
Description : In resources levelling (A) Total duration of project is reduced (B) Total duration of project is increased (C) Uniform demand of resources is achieved (D) Cost of project is controlled
Last Answer : C
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)
Last Answer : The process by which a nucleus of a large and heavy element breaks down into a nucleus of a smaller element is called a nuclear fission reaction.
Description : The reaction `._(92)U^(235) + ._(0)n^(1) rarr ._(56)Ba^(140) + ._(36)Kr^(93) + 3 ._(0)n^(1)` represents a)Artificial radioactivity b)Nuclear fission c
Last Answer : The reaction `._(92)U^(235) + ._(0)n^(1) rarr ._(56)Ba^(140) + ._(36)Kr^( ... radioactivity B. nuclear fission C. nuclear fussion D. none of the above
Description : A reaction develop nuclear energy at the rate of `3 xx 10^(4) kW`. How many atoms of `.^(215)U` undergo fission per second? How much `.^(235)U` is bur
Last Answer : A reaction develop nuclear energy at the rate of `3 xx 10^(4) kW`. How many atoms of `.^(215)U` ... constant is `6.023 xx 10^(26)` per kg mole)
Description : If For a sustainable fission reaction each fission must produce exactly how many additional fission reaction(s).?
Last Answer : To sustain a fission chain reaction, each fission reaction must result in one more fission reaction. And that one should result in one more, and so on.
Description : If For a sustainable fission reaction each fission must produce exactly additional fission reaction(s).?
Last Answer : A stable nuclear fission reaction will be sustained if every fission produces one additional fission reaction.
Description : In a nuclear fission reaction a freely moving neutron?
Last Answer : In a nuclear fission reaction, a freely moving neutron undergoes neutron capture and initiates the nuclear fission of a fuel atom.
Description : For a chain reaction to occur each fission mus produce at least ____more fission reaction?
Last Answer : its 1 i think
Description : For a chain reaction occur each fission must produce at least ____more fission reaction?
Last Answer : 1::::: APEX (I Just took the test)
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.
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.
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.
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.
Description : Name the particle that is most essential to continue the chain reaction during the fission of uranium - (1) Electron (2) Proton (3) Neutron (4) Positron
Last Answer : (3) Neutron Explanation: Nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts (lighter nuclei), often producing ... in the modern world is usually a deliberately produced manmade nuclear reaction induced by a neutron.
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.
Description : The Solar energy produced by – (1) Fusion reaction (2) Fission reaction (3) Combustion reaction (4) None
Last Answer : (1) Fusion reaction Explanation: The Sun is amain-sequence star, and thus generates its energy by nuclear fusion of hydrogen nuclei into helium. In its core, the Sun fuses 620 million metric tons of hydrogen ... come very close and then collide at a very high speed and join to form a new nucleus.
Description : Which type of reaction produces the most harmful radiation? (1) Fusion reaction (2) Fission reaction (3) Chemical reaction (4) Photo-Chemical reaction
Last Answer : (2) Fission reaction Explanation: Radiation is one of the byproducts of radioactive decay of unstable atomic nuclei. Nuclear fission is the process on which the operation of most nuclear power plants ... , the nucleus splits into two smaller nuclei of roughly (though not exactly) equal sizes.
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.
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.
Description : Which of the following undergoes fission reaction easily? (A) U-235 (B) U-238 (C) Th-232 (D) None of these
Last Answer : (A) U-235
Description : Solar energy results from __________ reaction. (A) Fission (B) Combustion (C) Thermonuclear (D) None of these
Last Answer : (C) Thermonuclear
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
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
Description : The two elements which are used to absorb the neutrons in nuclear fission during chain reaction
Last Answer : Boran and Cadmium
Description : In the fission of U235, what is the average number of neutrons produced in the fission reaction? w) 1.5 x) 2.5 y) 3.5 z) 4.5
Last Answer : ANSWER: X -- 2.5
Description : Of the following, which non-fissioning element is used in the cooling water of nuclear power plants to help control the rate of the fission reaction by absorbing neutrons: w) zirconium x) boron y) krypton z) cesium
Last Answer : ANSWER: X -- BORON
Description : Name the particle that is most essential to continue the chain reaction during the fission of uranium- (1) Electron (2) Proton (3) Neutron (4) Positron
Last Answer : Neutron
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
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
Description : The Solar energy produced by (1) Fusion reaction (2) Fission reaction (3) Combustion reaction (4) None
Last Answer : Fusion reaction
Description : Which type of reaction produces the most harmful radiation ? (1) Fusion reaction (2) Fission reaction (3) Chemical reaction (4) Photo-Chemical reaction
Last Answer : Fission reaction
Last Answer : Nuclear fusion
Description : Which was the first nuclear reaction achieved?
Last Answer : The first nuclear reaction was achieved by Ernest Rutherford.
Description : When a chemical reaction and it and reverse are occurring at the same time and at the same rate the reaction has achieved?
Last Answer : equilibrium
Description : Identify the INCORRECT statement below regarding chemical equilibrium. A All chemical reactions are, in principle, reversible. B Equilibrium is achieved when the forward reaction rate equals the ... equilibrium constant. E Equilibrium is achieved when reactant and product concentrations are equal.
Last Answer : E Equilibrium is achieved when reactant and product concentrations are equal.
Description : Answer: The creation of the first controlled chain reaction.
Last Answer : Electron is looked upon as a cloud of negative charge according to what?
Description : Controlled chain reaction is the working principle of
Description : What is a controlled chain reaction?
Last Answer : A chain reaction in which the number of neutrons produced is kept constant is called controlled chain reaction.
Description : A nuclear reactor is a device used to carry out controlled nuclear reaction whereas GM counter is a device used to detect? A. Current B. Voltage C. Nuclear Radiation (Answer) D. power E. None of these
Last Answer : C. Nuclear Radiation (Answer)
Description : During oxidation energy released in a series of slow stepwise reaction controlled by (A)____ and is trapped as (B)____ in the form of (C)____
Last Answer : During oxidation energy released in a series of slow stepwise reaction controlled by (A)____ and is trapped as (B)____ in the form of (C)____
Description : What is the rate determining reaction of glycolysis show that this is a coupled reaction and it can be controlled allosterically?
Last Answer : Need answer
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.