NEET mcqs on Structure of Atom

NEET mcqs on Structure of Atom

NEET mcqs on Structure of Atom

The Structure of Atom is a very important chapter in Chemistry for the NEET exam. It carries a weightage of 32% from the Physical Chemistry section, which means that there is a high probability of at least one question from this chapter being asked in the exam.

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The Structure of Atom chapter covers the basic concepts of atomic structure, such as the electron, proton, and neutron; the arrangement of electrons in an atom; and the different energy levels of electrons. This chapter is also important for understanding other topics in Chemistry, such as bonding, chemical reactions, and nuclear chemistry.

Here are some of the important topics in the Structure of Atom chapter that you should focus on for the NEET exam:

  • Basic concepts of atomic structure
  • The arrangement of electrons in an atom
  • The different energy levels of electrons
  • Quantum numbers
  • The Bohr model of the atom
  • The wave-particle duality of electrons
  • The Heisenberg uncertainty principle
  • The de Broglie wavelength

You should also practice solving questions from previous year’s NEET papers to get a better understanding of the type of questions that are asked.

Here are some multiple-choice questions (MCQs) on the structure of the atom for NEET (National Eligibility cum Entrance Test) preparation, along with their answers:

1. Who is credited with the discovery of the electron?
a) Rutherford
b) Dalton
c) Thomson
d) Bohr

Certainly! Here are some multiple-choice questions (MCQs) on the structure of the atom for NEET (National Eligibility cum Entrance Test) preparation, along with their answers:

1. Who is credited with the discovery of the electron?
a) Rutherford
b) Dalton
c) Thomson
d) Bohr

Answer: c) Thomson

2. What is the charge of a proton?
a) Positive
b) Negative
c) Neutral
d) Zero

Answer: a) Positive

3. What is the charge of an electron?
a) Positive
b) Negative
c) Neutral
d) Zero

Answer: b) Negative

4. What is the maximum number of electrons that can occupy the third energy level (n=3) of an atom?
a) 2
b) 8
c) 18
d) 32

Answer: c) 18

5. Which subatomic particle is found outside the nucleus of an atom?
a) Proton
b) Neutron
c) Electron
d) Positron

Answer: c) Electron

6. The atomic number of an element is determined by the number of:
a) Neutrons
b) Electrons
c) Protons
d) Nucleons

Answer: c) Protons

7. What is the mass number of an atom?
a) The number of electrons
b) The number of protons
c) The sum of protons and neutrons
d) The sum of protons and electrons

Answer: c) The sum of protons and neutrons

8. Which of the following represents the correct electronic configuration of oxygen (O, atomic number 8)?
a) 1s² 2s² 2p⁴
b) 1s² 2s² 2p²
c) 1s² 2s² 2p⁶
d) 1s² 2s² 2p³

Answer: a) 1s² 2s² 2p⁴

9. Who proposed the planetary model of the atom?
a) Rutherford
b) Thomson
c) Bohr
d) Dalton

Answer: c) Bohr

10. The nucleus of an atom contains:
a) Electrons
b) Protons and electrons
c) Neutrons and electrons
d) Protons and neutrons

Answer: d) Protons and neutrons

JEE mcqs on Structure of Atom with answers

Here are some multiple-choice questions (MCQs) on the structure of the atom for JEE (Joint Entrance Examination) preparation, along with their answers:

1. Who is credited with the discovery of the electron?
a) Rutherford
b) Thomson
c) Bohr
d) Dalton

Answer: b) Thomson

2. The atomic number of an element is determined by the number of:
a) Electrons
b) Neutrons
c) Protons
d) Electrons and neutrons combined

Answer: c) Protons

3. The mass number of an atom is determined by the number of:
a) Electrons
b) Neutrons
c) Protons
d) Electrons and protons combined

Answer: b) Neutrons

4. Which subatomic particle has a charge of +1?
a) Proton
b) Electron
c) Neutron
d) Nucleus

Answer: a) Proton

5. Who proposed the planetary model of the atom with electrons orbiting the nucleus like planets around the sun?
a) Rutherford
b) Bohr
c) Thomson
d) Dalton

Answer: b) Bohr

6. What is the maximum number of electrons that can occupy the third energy level (n=3) in an atom?
a) 2
b) 8
c) 18
d) 32

Answer: c) 18

7. The electronic configuration of oxygen (O) is:
a) 1s² 2s² 2p³
b) 1s² 2s² 2p⁴
c) 1s² 2s² 2p⁵
d) 1s² 2s²

Answer: c) 1s² 2s² 2p⁵

8. Isotopes of an element have the same number of:
a) Electrons
b) Neutrons
c) Protons
d) Both electrons and protons

Answer: c) Protons

9. What is the charge on a nucleus of an atom of uranium-238 (U-238)?
a) +2
b) +3
c) +1
d) +4

Answer: c) +1

10. What is the atomic mass unit (amu) approximately equal to?
a) 1/12th the mass of a carbon-12 atom
b) The mass of a proton
c) The mass of a neutron
d) The mass of an electron

Answer: a) 1/12th the mass of a carbon-12 atom

These questions should help you practice and prepare for the structure of the atom topic in the JEE examination.

Here are some tips for studying the Structure of Atom chapter for the NEET exam:

  • Start by reading the NCERT textbook carefully.
  • Make notes of the important concepts and formulas.
  • Solve practice questions from different books and online resources.
  • Join a study group or take online classes to get help from other students and teachers.
  • Practice regularly to stay ahead of the curve.

By following these tips, you can ensure that you are well-prepared for the Structure of Atom chapter in the NEET exam.

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