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
Description : Of the following, which is the best fuel for a nuclear fusion reactor: w) hydrogen x) lithium y) deuterium z) helium
Last Answer : ANSWER: Y -- DEUTERIUM
Description : The source of enormous energy of sun is a)Fusion of hydrogen to form helium b)Fission of uranium c)Fusion of deuterium and tritium d)Fusion to tritium
Last Answer : The source of enormous energy of sun is a)Fusion of hydrogen to form helium b)Fission of uranium ... and tritium D. fission of tritium to form helium
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
Description : In radioactive decay, the emission of an electron is characteristic of: w) Alpha decay x) Beta decay y) Gamma decay z) X-rays
Last Answer : ANSWER: X -- BETA DECAY
Description : The splitting of an atomic nucleus is called: w) fission x) fusion y) cleavage z) separation
Last Answer : ANSWER: W -- FISSION
Description : In a spent fuel assembly, the radioactive elements having the longest half-lives are the: w) fission products x) actinides y) activation products z) radioisotopes of lead
Last Answer : ANSWER: X -- ACTINIDES
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
Description : A radioactive element A on disintegration gives two elements B and C. If B is helium and C is the element of atomic number 90 and atomic mass 234, the
Last Answer : A radioactive element A on disintegration gives two elements B and C. If B is helium and C is the element of atomic ... )^(234)Th` D. `._(91)^(234)Pa`
Description : Which physical phenomenon or principle is most often applied in the search for petroleum reservoirs? w) magnetic field distortions x) electromagnetic radiation y) natural radioactive decay of minerals z) acoustic wave transmission and reflection
Last Answer : ANSWER: Z -- ACOUSTIC WAVE TRANSMISSION AND REFLECTION
Description : Which physical phenomenon or principle is most often applied in the search for petroleum reservoirs? w) gravitational attraction x) magnetic field distortions y) natural radioactive decay of minerals z) acoustic wave transmission and reflection
Description : Lead-206 is the final product of the radioactive decay series named the: w) thorium series x) actinium series y) uranium series z) neptunium series
Last Answer : ANSWER: Y -- URANIUM SERIES
Description : Radioactive decay is a: w) zero-order process x) temperature-dependent process y) first-order process z) second-order process
Last Answer : ANSWER: Y -- FIRST-ORDER PROCESS
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
Description : Alpha particles are nuclei of: w) hydrogen x) helium y) oxygen z) nitrogen
Last Answer : ANSWER: X -- HELIUM
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 : 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)
Description : Which of the following accounts for the maximum energy release in the nuclear fission process? (A) Kinetic energy of fission products (B) Radioactive decay of fission products (C) Instantaneous release of γ-rays (D) Kinetic energy of neutrons
Last Answer : (A) Kinetic energy of fission products
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.
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 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 : 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.
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.
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
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
Description : Which of the following gases is more soluble in water as the water temperature increases? w) Helium x) Air y) Carbon dioxide z) Hydrogen
Last Answer : ANSWER: W -- HELIUM
Description : The three isotopes of hydrogen are protium, tritiu and: w) heprin x) helium y) duodenum z) deuterium
Last Answer : ANSWER: Z -- DEUTERIUM
Description : Which two gases are used to disinfect water in sewage treatment facilities? w) helium and nitrogen x) ozone and chlorine y) oxygen and hydrogen z) nitrogen and chlorine
Last Answer : ANSWER: X -- OZONE AND CHLORINE
Description : The Oklo reactor in Gabon, Africa, is significant because it: w) was the first man-made reactor. x) was a natural fission reactor. y) was the first reactor used to generate electricity. z) produced the most electricity in a single year.
Last Answer : ANSWER: X -- WAS A NATURAL FISSION REACTOR.
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 : The Solar energy produced by (1) Fusion reaction (2) Fission reaction (3) Combustion reaction (4) None
Last Answer : Fusion reaction
Description : When an atom undergoes beta decay, the atomic number of the nucleus: w) is unchanged x) increases by one y) decreases by one z) none of the above
Last Answer : ANSWER: X -- INCREASES BY ONE
Description : The oxygen in the earth's atmosphere was probably produced by which of the following? w) volcanos x) photosynthetic organisms y) radioactive minerals z) meteors
Last Answer : ANSWER: X -- PHOTOSYNTHETIC ORGANISMS
Description : Most of the new atoms formed when atoms in a nuclear reactor capture neutrons without fissioning are: w) fission products x) activation products y) actinides z) lead isotopes
Last Answer : ANSWER: Y -- ACTINIDES
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 : Which of the following is NEVER used as a coolant in nuclear reactors: w) liquid nitrogen x) liquid sodium y) water z) helium gas
Last Answer : ANSWER: W -- LIQUID NITROGEN
Description : What is the wavelength of red light emitted by a helium-neon laser? w) 122 nanometers x) 633 nanometers y) 2.43 picometers z) 1.37 micrometers
Last Answer : ANSWER: X -- 633 NANOMETERS (actually 632.8 nm)
Description : Which of the following terms refer to the amount of heat needed to raise the temperature of a unit mass of a substance through one degree? w) Heat of fusion x) Liquification heat y) Internal heat z) Specific heat
Last Answer : ANSWER: Z -- SPECIFIC HEAT
Description : The amount of heat required to change a boiling liquid to a gas at the same temperature depends on one of the following properties of the liquid. Does it depend on the liquid's: w) heat of fusion x) heat of vaporization y) temperature z) density
Last Answer : ANSWER: X -- HEAT OF VAPORIZATION
Description : If you start with 24 grams of a radioactive element with a half-life of one month, how many grams of the radioactive element will be left after 2 months? w) 1.5 grams x) 3 grams y) 6 grams z) 12 grams
Last Answer : ANSWER: Y -- 6 GRAMS
Description : The emission of a positron from a radioactive atom is generally accompanied by the emission of one of the following. Is it accompanied by the emission of: w) a meson x) a baryon y) an antineutrino z) a neutrino
Last Answer : ANSWER: Z -- A NEUTRINO
Description : The decay product of tritium (a beta emitter) is (A) Lithium (B) Helium (C) Deuterium (D) Hydrogen
Last Answer : (B) Helium
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 : 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 : The phenomenon occurring during explosion of a hydrogen bomb is (A) Nuclear fission (B) Nuclear fusion (C) A combination of both nuclear fission & fusion (D) None of these
Last Answer : C) A combination of both nuclear fission & fusion
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 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)
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.
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.