Class 9 CBSE NCERT Chemistry Chapter 1 MCQs
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Questions and Answers

Which of the following is a subatomic particle with a negative charge?

  • Proton
  • Electron (correct)
  • Neutron
  • Nucleus

    • What is the total number of protons present in the nucleus of a carbon-12 atom?

  • 0
  • 12
  • 6 (correct)
  • 18

    • Which of the following statements is true about isotopes?

  • They have same atomic numbers and same mass numbers
  • They have different atomic numbers and same mass numbers
  • They have different atomic numbers and different mass numbers
  • They have different mass numbers and same atomic numbers (correct)

    • Study Notes

    Subatomic Particles

    • An electron is a subatomic particle with a negative charge.

    Atomic Nucleus

    • A carbon-12 atom has 6 protons in its nucleus.

    Isotopes

    • Isotopes are atoms of the same element with the same number of protons (atomic number) but a different number of neutrons (mass number).

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    Description

    Test your knowledge of subatomic particles, atomic structure, and isotopes with these multiple-choice questions based on Class 9 CBSE NCERT Chemistry Chapter 1.

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