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Free Online Mock Physics Multiple Choice Test on Atomic Nuclearphysics
Sub Category : Atomic Nuclearphysics Test : 4 Time Left :
1) Radius of 2He4 is 3 fermi. The radius of 82Pb206 nucleus will be(1) 6.5 fermi (2) 5.6 fermi (3) 16.11 fermi (4) 11.16 fermi
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2) The particle which is deflected by electric field is(1) γ-rays (2) X-rays (3) Neutrons (4) α-particles.
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3)If 10% fo a radioactive material decays in 5 days, the amount of original material left after 20 days is approximately
(1) 35% (2) 45% (3) 55% (4) 65%
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4) Atomic weight of boron is 10.81. It has two isotopes 5B10 and 5B11. The ratio of 5B10: 5B11 in nature would be(1) 10:1 (2) 1:10 (3) 81:19 (4) 19:81
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5) An ionic atom equivalent to hydrogen atom has wavelength equal to 1/4th of the wavelength of hydrogen lines. The ion will be (1) Li++ (2) Na10+ (3) Na9+ (4) He+
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