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Class 9 CBSE NCERT Chemistry Chapter 1 MCQs

3 Questions

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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?

6 (correct)

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.