Chapter 2: Class 7 Science Exam Tests
Class 7 Science MCQs - Chapter 2
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MCQ: The isotope of uranium (Uranium-238) contains
MCQ: As neutrons have electrical charge, they do not effect
MCQ: The theory about atom was first put forward by a Greek philosopher
MCQ: Electrons revolve around the nucleus as fast as
MCQ: If hydrogen forms only one bond, then the valency of hydrogen is
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