Class 9 Chemistry e-Book's MCQs - Complete
Isotopes Quiz App Download & e-Book - 143
Apps:
MCQ:
When Uranium-238 emits α particles it decays in to
- Helium
- Carbon
- Thorium-234
- Uranium-235
c
Class 9 Chemistry App & e-Book Tests PDF Download
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9th Grade Chemistry MCQs eBook Download
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Class 9 Chemistry Quiz with Answers
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