Class 7 Science MCQs - Chapter 3
Atoms Molecules and Ions Quiz Questions and Answers PDF - 3
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Atoms Molecules and Ions Questions & Answers PDF Download: MCQ Quiz 3
MCQ 11: Dalton's model of atom states that an atom is
- very small
- hard sphere
- indivisible
- all of above
MCQ 12: The number of protons and electrons in an atom is
- different
- same
- average
- constant
MCQ 13: Electrons orbiting around nucleus bear
- positive charge
- negative charge
- no charge
- neutral charge
MCQ 14: An atom's model that the atom is composed of electrons surrounded by a group of positive charge to balance the electrons' negative charges is called
- Thomson's Model
- Rutherford's Model
- Dalton's Model
- Bohr's Model
MCQ 15: The positively charged particles of an atom are called
- protons
- neutrons
- electrons
- charges
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