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Subjects
Science State Board
Class 10
Nuclear physics
Radioactivity - Types, Safety measures and Uses
6.
Natural radioactivity
Exercise condition:
4
m.
State true or false
:
1
.
Marie and Pierre Curie detected radioactivity in a small black material called Pitchblende.
True
False
2
.
Nuclear decay is a process that converts unstable nuclei into more stable nuclei.
False
True
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