Atomic Structure and Radioactivity - SS1 Physics Past Questions and Answers - page 4
Discuss the limitations of the Bohr Model and the development of Quantum Mechanics.Â
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Radioactivity is the spontaneous emission of:
Electrons
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Protons
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Alpha particles
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Neutrons
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The process in which an unstable atomic nucleus emits an alpha particle is known as:
Alpha decay
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Beta decay
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Gamma decay
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Nuclear fission
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The half-life of a radioactive substance is defined as the time it takes for:
Half of the substance to decay
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All of the substance to decay
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One-fourth of the substance to decay
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None of the above
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Beta decay involves the emission of:
Protons
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Electrons
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Neutrons
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Alpha particles
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Gamma radiation is:
A stream of protons
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A stream of electrons
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High-energy electromagnetic radiation
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The emission of alpha particles
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The process in which a heavy nucleus splits into two smaller nuclei is called:
Alpha decay
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Beta decay
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Gamma decay
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Nuclear fission
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The decay of a radioactive substance follows a:
Linear pattern
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Exponential pattern
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Logarithmic pattern
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Random pattern
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Radioactive isotopes are used in:
Medical imaging
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Power generation
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Carbon dating
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All of the above
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The unit used to measure the amount of radioactivity is:
Watt
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Coulomb
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Becquerel
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Ampere
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