Class 7 Science MCQs - Chapter 3

Atoms Molecules and Ions Trivia Questions and Answers PDF - 8

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Atoms Molecules and Ions Questions & Answers PDF Download: MCQ Quiz 8

MCQ 36: If an atom loses electron the ion obtained is charged

positively
negatively
neutral
null charge

MCQ 37: Molecules which consists of fixed number of different types of atoms which are chemically combined together, are

elements
compounds
mixtures
liquids

MCQ 38: The representation of an object, system or phenomenon is done by

scientific model
key model
atomic model
role model

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