DP Physics (first assessment 2025)

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Question EXE.1A.SL.TZ0.19

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Date Example questions Example questions Marks available [Maximum mark: 1] Reference code EXE.1A.SL.TZ0.19
Level SL Paper 1A Time zone TZ0
Command term Question number 19 Adapted from N/A
19.
[Maximum mark: 1]
EXE.1A.SL.TZ0.19

Fuel rods in a nuclear fission reactor contain uranium isotopes U-235 and U-238. Which process taking place in the reactor contributes most significantly to the formation of radioactive waste products?


A.  alpha decay of U-235

B.  alpha decay of U-238

C.  neutron-induced fission of U-235

D.  neutron-induced transmutation of U-238 to plutonium-239

[1]

Markscheme

C

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