DP Physics (first assessment 2025)

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Question 22M.1A.SL.TZ2.24

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ2.24
Level SL Paper 1A Time zone TZ2
Command term Question number 24 Adapted from N/A
24.
[Maximum mark: 1]
22M.1A.SL.TZ2.24

A neutron is absorbed by a nucleus of uranium-235U92235. One possible outcome is the production of two nuclides, barium-144Ba56144 and krypton-89Kr3689.

How many neutrons are released in this reaction?

A.  0

B.  1

C.  2

D.  3

[1]

Markscheme

D

Examiners report

Answer C 2 neutrons, was the most popular choice suggesting that candidates failed to read the question properly and missed 'a neutron is adsorbed' at the beginning.

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