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MCQ for Full Syllabus Chemistry Structure of Atoms
Full Syllabus Chemistry students should refer to the following multiple-choice questions with answers for Structure of Atoms in Full Syllabus. These MCQ questions with answers for Full Syllabus Chemistry will come in exams and help you to score good marks
Structure of Atoms MCQ Questions Full Syllabus Chemistry with Answers
Question: The mass of a photon with a wavelength equal to 1.54 × 10–8 cm is
- a) 1.4285 × 10–32 kg
- b) 0.8268 × 10–34 kg
- c) None of these
- d) 1.2876 × 10–33 kg
Answer: 1.4285 × 10–32 kg
Question: If the Planck’s constant h = 6.6×10–34 Js, the de Broglie wavelength of a particle having momentum of 3.3 × 10–24 kg ms –1 will be
- a) 2Å
- b) 0.002 Å
- c) 0.5Å
- d) 500Å
Answer: 2Å
Question: The values of Planck's constant is 6.63 × 10–34 Js. The velocity of light is 3.0 × 108 m s–1. Which value is closest to the wavelength in nanometres of a quantum of light with frequency of 8 × 1015 s–1?
- a) 4 × 101
- b) 2 × 10–25
- c) 5 × 10–18
- d) 3 × 107
Answer: 4 × 101
Question: The de Broglie wavelength of a car of mass 1000 kg and velocity 36 km/hr is
- a) 6.626 × 10–38 m
- b) 6.626 × 10– 30 m
- c) 6.626 × l0–34 m
- d) 6.626 × 10–31 m
Answer: 6.626 × 10–38 m
Question: Heisenberg uncertainty principle can be explained as
- a)
- b)
- c)
- d)
Answer:
Question: Heisenberg's uncertainity principle is applicable to
- a) any moving object
- b) electron only
- c) atoms only
- d) nucleus only
Answer: any moving object
Question: The position of both, an electron and a helium atom is known within 1.0 nm. Further the momentum of the electron is known within 5.0 × 10–26 kg ms–1. The minimum uncertainty in the measurement of the momentum of the helium atom is
- a) 5.0 × 10–26 kg ms–1
- b) 80 kg ms–1
- c) 50 kg ms–1
- d) 8.0 × 10–26 kg ms–1
Answer: 5.0 × 10–26 kg ms–1
Question: Uncertainty in the position of an electron (mass = 9.1 × 10–31 kg) moving with a velocity 300 ms–1, accurate upto 0.001% will be (h = 6.63 × 10–34 Js)
- a) 1.92 × 10–2 m
- b) 3.84 × 10–2 m
- c) 5.76 × 10–2 m
- d) 19.2 × 10–2 m
Answer: 1.92 × 10–2 m
Question: The uncertainty in the position of an electron (mass = 9.1 × 10–28 g) moving with a velocity of 3.0 × 104 cm s–1 accurate upto 0.011% will be
- a) 0.175 cm
- b) 1.92 cm
- c) 7.68 cm
- d) 3.84 cm
Answer: 0.175 cm
Question: The Heisenberg uncertainity principle will be most significant for which of the following object ?
- a) Object B of mass 9.11 × 10–28 g
- b) Object A of mass 9.11 × 10–30 kg
- c) Object C of mass 9.11 × 10–24 mg
- d) Object D of mass 9.11 × 10–28 kg
Answer: Object B of mass 9.11 × 10–28 g
Question: The orientation of an atomic orbital is governed by
- a) Magnetic quantum number
- b) Principal quantum number
- c) Azimuthal quantum number
- d) Spin quantum number
Answer: Magnetic quantum number
Question: For which one of the following sets of four quantum numbers, an electron will have the heighest energy?
- a)
- b)
- c)
- d) None of these
Answer:
Question: Which of the following sets of quantum numbers is correct for an electron in 4f orbital ?
- a)
- b)
- c)
- d)
Answer:
Question:
- a)
- b)
- c)
- d) None of these
Answer:
Question: Which of the following represents correct set of the four quantum numbers for an electron in a 4d subshell ?
- a) 4, 2, 1, – 1/2
- b) 4, 3, – 2, – 1/2
- c) 4, 2, 1, 0
- d) 4, 3, 2, + 1/2
Answer: 4, 2, 1, – 1/2
Question: The total number of electrons that can be accommodated in all orbitals having principal quantum number 2 and azimuthal quantum number 1 is
- a) 6
- b) 2
- c) 4
- d) 8
Answer: 6
Question:
- a) 14
- b) 6
- c) 0
- d) 2
Answer: 14
Question: Which of the following is not permissible arrangement of electrons in an atom?
- a)
- b)
- c)
- d)
Answer:
Question: Which of the following sets of quantum numbers represents the highest energy of an atom?
- a)
- b)
- c)
- d)
Answer:
Question: What will be the sum of all possible values of l and m for n = 5 ?
- a) 13
- b) 9
- c) 12
- d) 4
Answer: 13
Question: The following quantum numbers are possible for how many orbital(s) n = 3, l = 2, m = +2 ?
- a) 1
- b) 3
- c) 4
- d) 2
Answer: 1
Question: The orbitals are called degenerate when
- a) they have the same energy
- b) they have different wave functions but same energy
- c) they have the same wave functions but different energies
- d) they have the same wave functions
Answer: they have the same energy
Question: The number of spherical nodes in 3p orbitals are
- a) one
- b) three
- c) None of these
- d) two
Answer: one
Question: Which of the following graph correspond to one node
- a)
- b)
- c)
- d)
Answer:
Question: If there are five radial nodes, then what can be the correct representation of the orbital for n = 8.
- a) 8d
- b) 8p
- c) 8s
- d) 8f
Answer: 8d
Question: What can be the representation of the orbital having 3 angular nodes and n = 5.
- a) 5f
- b) 5s
- c) 5d
- d) 5p
Answer: 5f
Question: The number of orbitals present in the fifth shell will be
- a) 25
- b) 50
- c) 10
- d) 20
Answer: 25
Question: Arrange the orbital of same shell in the increasing order of shielding strength of the outer shell of electrons. s, f, d, p
- a) s > p > d > f
- b) s > p < d < f
- c) s < p < d < f
- d) s > p > d < f
Answer: s > p > d > f
Question: Which of the following is not correct for electronic distribution in the ground state ?
- a) All of the above
- b)
- c)
- d)
Answer: All of the above
Question: The electronic configuration of gadolinium (Atomic number 64) is
- a)
- b)
- c)
- d)
Answer:
Question: The order of filling of electrons in the orbitals of an atom will be
- a) 4s, 3d, 4p, 5s, 4d
- b) 3d, 4p, 4s, 4d, 5s
- c) 3d, 4s, 4p, 4d, 5s
- d) 5s, 4p, 3d, 4d, 5s
Answer: 4s, 3d, 4p, 5s, 4d
Question:
- a) 6
- b) 4
- c) 5
- d) 3
Answer: 6
Question:
- a) ground state
- b) anionic form
- c) excited state
- d) cationic form
Answer: ground state
Question: Number of unpaired electrons in N2+ is
- a) 1
- b) 2
- c) 0
- d) 3
Answer: 1
Question: An ion has 18 electrons in the outermost shell, it is
- a)
- b)
- c)
- d)
Answer:
Question: In a given atom no two electrons can have the same values for all the four quantum numbers. This is called
- a) Pauli’s exclusion principle
- b) Aufbau principle
- c) Hund’s Rule
- d) Uncertainty principle
Answer: Pauli’s exclusion principle
Question: The electronic configuration of Cu (atomic number 29) is
- a)
- b)
- c)
- d)
Answer:
Question: The orbital diagram in which the Aufbau principle is violated is
- a)
- b)
- c)
- d) None of these
Answer:
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JEE (Main) Full Syllabus Chemistry Structure of Atoms MCQs
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