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Class 7 Science Competitive Exam MCQs – Practice Test 21 (Chapter 1)

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Study Atoms and atom model Multiple Choice Questions (MCQs) with Answers PDF to improve school performance. Download the Atoms and Atom Model MCQs PDF e-Book, Ch. 1-21 to study Class 7 Science Course. Learn Atoms and Atom Model Quiz Questions and Answers for science collaborative learning tools. Download the Atoms and Atom Model Learning App: Free Class 7 Science MCQs App to atoms and elements, mass number and isotopes, chemical formulas, common ions, uses of radioisotopes test prep for science homework digital support.

Free Atoms and Atom Model MCQs App Download: Number of neutrons in carbon-13 is; MCQ with answers: 6, 5, 7, and 13. Solve Atoms and Elements MCQ Questions, download Google e-Book (Free Chapter) to improve school performance.

Atoms and Atom Model MCQs – Practice Test 21 PDF Download

MCQ 101: The smallest atom in 'periodic table' yet found is:

  1. hydrogen
  2. helium
  3. lithium
  4. magnesium

MCQ 102: The number of neutrons in carbon-13 is:

  1. 5
  2. 6
  3. 7
  4. 13

MCQ 103: To multiply multiple elements with a number we use:

  1. comma
  2. dot
  3. brackets
  4. cross

MCQ 104: The ionic chemical formula of magnesium is:

  1. Mg-2
  2. Mg+2
  3. Mg-
  4. Mg+

MCQ 105: Nuclear batteries that produce small amount of current have:

  1. longer life
  2. shorter life
  3. large size
  4. circular shape

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