Atoms and Atom Model Multiple Choice Questions and Answers 23 PDF Download

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Study elementary school science multiple choice questions (MCQs): 'isotope' carbon-12 makes up about, for free online courses with choices 80% of carbon on earth, 90% of carbon on earth, 99% of carbon on earth, and 89% of carbon on earth, mass number and isotopes quiz with virtual academy portal for online learning of mid term and final exams preparation. Free science study guide for online learning mass number and isotopes quiz questions to attempt multiple choice questions based test.

MCQs on Atoms and Atom Model Worksheets 23 Quiz PDF Download

MCQ: 'isotope' carbon-12 makes up about

  1. 90% of carbon on earth
  2. 80% of carbon on earth
  3. 99% of carbon on earth
  4. 89% of carbon on earth


MCQ: One molecule of carbon dioxide consists of

  1. one carbon and two oxygen atoms
  2. one carbon and oxygen atom
  3. two carbon and one oxygen atom
  4. two carbon and one oxygen atoms


MCQ: Atoms of different elements differ from each other because of

  1. difference in color
  2. difference in size
  3. difference in shape
  4. difference in particle numbers


MCQ: When salt is formed, sodium

  1. gives an electron to chlorine
  2. takes an electron from chlorine
  3. shares an electron with chlorine
  4. takes a proton from chlorine


MCQ: In an atom of carbon, electronic configuration is

  1. 2 electrons in K shell and 4 in M shell
  2. 2 electrons in L shell and 4 in M shell
  3. 2 electrons in K shell and 4 in L shell
  4. 4 electrons in K shell and 2 in L shell