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Class 7 Science MCQs – Practice Test 18 (Chapter 1)

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Learn Atoms and atom model Multiple Choice Questions (MCQ Quiz) with Answers PDF to improve study habits. Download the Atoms and Atom Model MCQ PDF e-Book, Ch. 1-18 to learn Class 7 Science Course. Study Electrons and Shells Multiple Choice Questions and Answers (MCQs) PDF, Atoms and Atom Model Quiz Questions and Answers for science learning guidance portal. Download the Atoms and Atom Model MCQ App: Free Class 7 Science Study App to learn electrons and shells, electron levels, chemical formulas, science and radioisotopes test prep for science academic online tools.

Free Atoms and Atom Model Study App Download (iOS & Android): Electronic configuration of sodium as K, L, M is; MCQ with answers: 8, 1, 2, 2, 1, 8, 1, 2, 8, and 2, 8, 1. Practice Electrons and Shells MCQ Questions, download Apple Book (Free Chapter) to improve study habits.

Atoms and Atom Model MCQ – Practice Test 18 PDF Download

MCQ 86: Second shell can hold up to:

  1. four electrons
  2. six electrons
  3. eight electrons
  4. twelve electrons

MCQ 87: The electronic configuration of sodium as K, L, M is:

  1. 2, 1, 8
  2. 8, 1, 2
  3. 1, 2, 8
  4. 2, 8, 1

MCQ 88: Hydrogen is a diatomic gas and its chemical formula is:

  1. H2
  2. H2
  3. H
  4. Hy

MCQ 89: The second shell with the second energy level is known as:

  1. shell B
  2. shell L
  3. shell P
  4. shell K

MCQ 90: As the unstable atoms break up into smaller atoms,:

  1. energy is released
  2. radiations are released
  3. light is released
  4. heat is released

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