NEET UG CHEMISTRY Multiple Choice Questions (MCQs)

a) 0

b) 1

c) 2

d) 3

a) Its mass

b) Its velocity

c) Its momentum

d) Its energy

a) -13.6 eV

b) -3.4 eV

c) -1.51 eV

d) 1.51 eV

a) -l to +l

b) 0 to +l

c) -n to +n

d) -1 to +1

a) Phosphorus (P)

b) Sulfur (S)

c) Chlorine (Cl)

d) Argon (Ar)

a) Electrons in an atom can have the same set of quantum numbers.

b) No two electrons in an atom can have the same four quantum numbers.

c) Electrons in different orbitals can have the same quantum numbers.

d) Quantum numbers are independent of each other.

a) Principal quantum number (n)

b) Angular momentum quantum number (l)

c) Magnetic quantum number (m)

d) Spin quantum number (s)

a) Spherical

b) Dumbbell-shaped

c) Cloverleaf-shaped

d) None of the above

a) The correct sequence of orbitals in the electron configuration.

b) The probability of finding an electron in a particular orbital.

c) The wavelength of emitted radiation.

d) The ionization energy of an atom.

a) Opposite spins

b) Parallel spins

c) The same spin as the proton

d) The same energy as the nucleus

a) [Ne] 3s² 3p⁶

b) [He] 2s²

c) [Ar] 4s² 3d⁴

d) [Kr] 5s² 4d¹⁰

a) Electron spin can be described by quantum number l.

b) Electron spin is always opposite for electrons in the same orbital.

c) Electron spin can only be described by quantum number m.

d) Electron spin has no effect on the electron configuration.

a) It determines the size of the orbital.

b) It determines the shape of the orbital.

c) It determines the orientation of the orbital.

d) It determines the spin of the electron.

a) Electrons can only occupy certain allowed energy levels.

b) Electrons can occupy any energy level in the atom.

c) Energy levels are continuous and not discrete.

d) Electrons are not found in discrete energy levels in the hydrogen atom.

a) 13.6 eV

b) 27.2 eV

c) 1.51 eV

d) 0.54 eV