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Free Atoms and Atom Model Study App Download (iOS & Android): Most of the covalent compounds are found in; MCQ with answers: gaseous state, solid state, liquid state, and both in liquid and gaseous state. Practice Electron Levels MCQ Questions, download Apple Book (Free Chapter) to prepare science exams online.

Atoms and Atom Model MCQ – Practice Test 10 PDF Download

MCQ 46: The atomic number of sodium is 11 and its atomic mass is 23 and the number of protons and neutrons in an atom of sodium is:

  1. 11 and 11
  2. 11 and 23
  3. 23 and 11
  4. 11 and 12

MCQ 47: Most of the covalent compounds are found in:

  1. solid state
  2. gaseous state
  3. liquid state
  4. both in liquid and gaseous state

MCQ 48: The radioactive isotope of carbon is:

  1. carbon-12
  2. carbon-13
  3. carbon-14
  4. carbon-6

MCQ 49: The ionic chemical formula of potassium is:

  1. K-
  2. K+
  3. K-
  4. K+

MCQ 50: Nuclear batteries are:

  1. small in size
  2. very heavy
  3. harmful
  4. enlarge in size

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