Radioactivity is always dangerous

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Reference no: EM13880468

Radioactivity is always dangerous (T/F) F
Bananas have radioactivity (T/F) T
Radioactivity is a nuclear process (T/F) F
All nuclei are radioactive (T/F) F
All types of radiation are equally dangerous (T/F) F
Radioactivity is permanent (T/F) T
A sample with higher activity than other sample is always harder to keep under control (T/F) T
A sample with longer half life time than other sample is always harder to keep under control (T/F) F
137-Ba has a half life of 2.6min, that means that after 2.6 min it will not be radioactive anymore. (T/F) F
Two samples of the same radioactive nucleus can have different activities(T/F) T
Two samples of the same radioactive nucleus can have different half lives(T/F) F
All radioactivity is man made(T/F) F
When a person gets irradiative with a radioactive source he/she becomes radioactive(T/F) T

Would you please help me to get answers? Bold letters are my answers, and i am uncertain about them... This is radioactivity question.

Reference no: EM13880468

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