Class 7 Science e-Book's MCQs - Complete
Mass Number and Isotopes MCQs App & eBook Download - 2
Apps:
MCQ 2.
To find out number of neutrons in an atom, we need to know the
atomic number
proton number
electron number
mass number
d
Class 7 Science App & e-Book Tests PDF Download
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Mass Number and Isotopes Learning App & Free Study Apps
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7th Grade Science MCQs eBook Download
Class 8 Science MCQ with Answers
- Sediments are the particles of
- If one end of metal rod is heated the whole rod becomes hot due to
- Factors which surrounds an organism affecting its growth, development and survival make up the
- The upper small chambers are called as
- The protein which is red in color and present in blood is called
- A series of organism through which energy is transferred in the form of food is called