JEE CHEMISTRY UNIT 02 QUIZ NO 3 TOTAL QUESTIONS = 20 Mock Test Quiz Free MCQ pyqonline.com

JEE CHEMISTRY UNIT 02
QUIZ NO 3
TOTAL QUESTIONS = 20

1. The region where the probability of finding an electron is zero is called

A. Node B. Subshell C. Orbital D. Shell

2. The Lyman series of the hydrogen spectrum lies in the

A. Infrared region B. Microwave region C. Ultraviolet region D. Visible region

3. Which of the following subshells has the lowest energy?

A. 3d B. 4p C. 5s D. 4s

4. The splitting of spectral lines in a magnetic field is known as

A. Stark effect B. Compton effect C. Zeeman effect D. Photoelectric effect

5. The number of nodes in a 2p orbital is

A. 1 B. 2 C. 3 D. 0

6. Which of the following subshells can hold a maximum of 10 electrons?

A. p B. f C. d D. s

7. The shape of the d-orbitals is

A. Dumbbell B. Complex C. Elliptical D. Spherical

8. The principal quantum number (n) determines

A. Orientation of the orbital B. Size and energy of the orbital C. Spin of the electron D. Shape of the orbital

9. The uncertainty principle states that

A. ΔxΔp ≥ h/4π B. ΔxΔp = h C. ΔxΔp = h/2π D. ΔxΔp ≤ h/4π

10. What is the number of radial nodes in a 3p orbital?

A. 2 B. 3 C. 0 D. 1

11. The maximum number of orbitals in a p-subshell is

A. 3 B. 1 C. 4 D. 2

12. The number of degenerate orbitals in a p-subshell is

A. 4 B. 3 C. 1 D. 2

13. The shape of an sp3 hybridized orbital is

A. Planar B. Trigonal planar C. Linear D. Tetrahedral

14. The azimuthal quantum number for an s-orbital is

A. 2 B. 1 C. 0 D. 3

15. Which of the following orbitals is non-existent?

A. 4f B. 1s C. 3p D. 2d

16. The spectral series of hydrogen in the ultraviolet region is

A. Brackett B. Paschen C. Balmer D. Lyman

17. Which of the following orbitals has the highest energy?

A. 3d B. 4s C. 4p D. 5s

18. What is the maximum number of electrons that can occupy the d-subshell?

A. 2 B. 10 C. 6 D. 14

19. Which of the following quantum numbers is not related to the energy of an electron?

A. Principal quantum number B. Azimuthal quantum number C. Spin quantum number D. Magnetic quantum number

20. Which of the following is an incorrect quantum number set?

A. "n=4, l=3, m=2, s=+1/2" B. "n=1, l=0, m=0, s=-1/2" C. "n=2, l=1, m=0, s=+1/2" D. "n=3, l=2, m=3, s=-1/2"

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