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Class 7 Science MCQs – Practice Test 17 (Chapter 1)

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Learn Atoms and atom model Multiple Choice Questions (MCQs) with Answers PDF (Atoms and Atom Model MCQs PDF e-Book) download Ch. 1-17 to study Class 7 Science Course. Learn Atoms and Atom Model Quiz Questions and Answers for STEM middle school education. Free Atoms and Atom Model MCQs App: Download the Class 7 Science Study App to atoms and elements, science and radioisotopes, electrons and shells, covalent bonds, mass number and isotopes test prep for science lesson online delivery.

Free "Atoms and Atom Model MCQs" App Download with MCQ: As there are same number of electrons and protons in an atom, atomic number can also be called; with answers: proton number, electron number, nucleon number, and mass number for STEM middle school education. Solve Atoms and Elements MCQ Questions, download Google e-Book (Free Chapter) to master chemistry basics.

Atoms and Atom Model MCQs – Practice Test 17 PDF Download

MCQ 81: As there are same number of electrons and protons in an atom, atomic number can also be called:

  1. electron number
  2. proton number
  3. nucleon number
  4. mass number

MCQ 82: Unstable atoms break up into:

  1. electrons and protons
  2. smaller atoms
  3. neutrons and protons
  4. subatomic particles

MCQ 83: In a drawing of atom, shells are indicated by:

  1. rectangles
  2. squares
  3. circles
  4. triangles

MCQ 84: Diatomic gases such as nitrogen, oxygen and chlorine have:

  1. covalent bonding between their atoms
  2. dative bonding between their molecules
  3. metallic bonding between their elements
  4. strong bonding between their atom

MCQ 85: All three isotopes of carbon are combined with oxygen to form:

  1. carbon monoxide
  2. carbon dioxide
  3. carbon trioxide
  4. carbon tetroxide

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