JEE CHEMISTRY UNIT 02
QUIZ NO 2
TOTAL QUESTIONS = 20
1. The maximum number of orbitals present in the third shell is
A. 3
B. 6
C. 9
D. 12
2. The frequency of radiation with a wavelength of 500 nm is approximately
A. 6 × 10^14 Hz
B. 4 × 10^14 Hz
C. 3 × 10^14 Hz
D. 5 × 10^14 Hz
3. What is the magnetic quantum number for a d-orbital?
A. -2 to +2
B. -4 to +4
C. -1 to +1
D. -3 to +3
4. The ratio of the energy of an electron in the second orbit to that in the first orbit is
A. 1:9
B. 1:2
C. 1:4
D. 1:1
5. The maximum number of electrons that can be present in a subshell is given by
A. n^2
B. 4l+2
C. 2n^2
D. 2l+1
6. Which of the following orbitals has the highest energy?
A. 3p
B. 3s
C. 3d
D. 4s
7. Which of the following has a half-filled p-subshell?
A. Nitrogen
B. Fluorine
C. Neon
D. Oxygen
8. The splitting of spectral lines in an electric field is called
A. Stark effect
B. Compton effect
C. Photoelectric effect
D. Zeeman effect
9. The wavelength associated with a particle of mass 1g moving at 1 m/s is
A. 3.3 × 10^-24 m
B. 6.63 × 10^-34 m
C. 9.9 × 10^-31 m
D. 1.6 × 10^-27 m
10. The Lyman series of the hydrogen spectrum lies in
A. Infrared region
B. Ultraviolet region
C. Visible region
D. Microwave region
11. The region in which the probability of finding an electron is maximum is called
A. Nucleus
B. Node
C. Orbital
D. Shell
12. The shape of p-orbitals is
A. Spherical
B. Complex
C. Elliptical
D. Dumbbell
13. The quantum number that determines the size of the orbital is
A. Spin quantum number
B. Azimuthal quantum number
C. Principal quantum number
D. Magnetic quantum number
14. The Heisenberg Uncertainty Principle is given by
A. ΔxΔp ≥ h/4π
B. ΔxΔp = h
C. ΔxΔp ≤ h/4π
D. ΔxΔp = h/2π
15. The maximum number of electrons in a p-subshell is
A. 10
B. 2
C. 8
D. 6
16. What is the angular momentum of an electron in the second orbit of hydrogen?
A. h/π
B. h/2π
C. 2h/π
D. 4h/π
17. Which quantum number determines the orientation of an orbital?
A. Spin quantum number
B. Principal quantum number
C. Magnetic quantum number
D. Azimuthal quantum number
18. Which of the following has the lowest ionization energy?
A. 2s
B. 2p
C. 3s
D. 1s
19. Which of the following is a correct quantum number set for a 3p electron?
A. "n=3, l=1, m=0, s=+1/2"
B. "n=4, l=2, m=0, s=+1/2"
C. "n=3, l=0, m=0, s=-1/2"
D. "n=2, l=1, m=1, s=+1/2"
20. The splitting of spectral lines in a magnetic field is called
A. Photoelectric Effect
B. Stark Effect
C. Zeeman Effect
D. Compton Effect
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