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Free Online Mock Physics Multiple Choice Test on Atomic Nuclearphysics
Sub Category : Atomic Nuclearphysics Test : 7 Time Left :
1)In nuclear reaction, which of the following is conserved?
(1) Atomic number only (2) Mass number only (3) Energy only (4) Atomic number, mass number and energy
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2) A radioactive element 90X238 decays into 83Y222. The number of Beta-particles emitted is (1) 6 (2) 4 (3) 2 (4) 1
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3) A free neutron decays into a proton, an electron and(1) An alpha-particle (2) A Beta-particle (3) A Neutrino (4) An Antineutrino
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4) When a -particle is emitted from a nucleus, its neutron-proton ratio is(1) Becomes unity (2) Does not change (3) Is increased (4) Is decreased
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5)Minimum excitation potential of Bohr's first orbit in hydrogen atom is
(1) 13.6 V (2) 3.4 V (3) 3.6 V (4) 10.2 V
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