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Structure of Atom - NEET Chemistry Practice Quiz - 1 (Easy)

1. Who proposed the planetary model of the atom?

Niels Bohr
Ernest Rutherford
J.J. Thomson
James Chadwick
2. What is the charge of a neutron?
Positive
Negative
Zero
Depends on the isotope
3. Which particle determines the atomic number of an element?
Proton
Neutron
Electron
Positron
4. What is the maximum number of electrons in the second shell (L shell)?
2
4
8
10
5. Who discovered the electron?
Niels Bohr
Ernest Rutherford
J.J. Thomson
James Chadwick
6. Which of the following is not a fundamental particle of an atom?
Proton
Neutron
Electron
Photon
7. What is the main contribution of Niels Bohr to the atomic theory?
Discovery of the neutron
Discovery of the electron
Planetary model of the atom
Quantized electron energy levels
8. Which of the following has the highest energy in an atom?
1s orbital
2s orbital
2p orbital
3s orbital
9. What is the shape of an s orbital?
Spherical
Dumbbell
Double dumbbell
Planar
10. In which of the following orbitals the probability of finding an electron is highest at the nucleus?
s orbital
p orbital
d orbital
f orbital






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