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Learn Science and radioisotopes Multiple Choice Questions (MCQ Quiz) with Answers PDF (Science and Radioisotopes MCQ PDF e-Book) download to study Class 7 Science Tests. Study Atoms and Atom Model Multiple Choice Questions and Answers (MCQs), Science and Radioisotopes quiz answers PDF for science assignment help tools. Free Science and Radioisotopes Study App Download: Class 7 Science MCQ App to study inside an atom, uses of radioisotopes, ionic bonds, mass number and isotopes test prep to access science courses online.

Free "Science and Radioisotopes" App Download with MCQ: Isotope of uranium (Uranium-238) contains; with answers: 141 neutrons, 142 neutrons, 146 neutrons, and 149 neutrons for science assignment help tools. Solve Atoms and Atom Model Quiz Questions, download Google e-Book (Free Chapter) to participate digital science learning.

Science and Radioisotopes MCQs PDF Download – Prep Test

MCQ 1: The isotope of uranium (Uranium-238) contains:

  1. 141 neutrons
  2. 142 neutrons
  3. 146 neutrons
  4. 149 neutrons

MCQ 2: Uranium-238 which is an isotope of uranium, is:

  1. stable
  2. radioactive
  3. complete
  4. decayed

MCQ 3: The larger the number of subatomic particles, the more the likeliness of being:

  1. stable
  2. radioactive
  3. complete
  4. decayed

MCQ 4: Unstable atoms break up into:

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

MCQ 5: 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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