JEE CHEMISTRY UNIT 02
QUIZ NO 4
TOTAL QUESTIONS = 20
1. Which element has the electronic configuration 1s2 2s2 2p6 3s2 3p1?
A. Magnesium
B. Aluminium
C. Phosphorus
D. Silicon
2. The splitting of spectral lines in a magnetic field is called
A. Zeeman effect
B. Stark effect
C. Compton effect
D. Photoelectric effect
3. Which series of hydrogen spectrum lies in the visible region?
A. Paschen
B. Lyman
C. Brackett
D. Balmer
4. What is the number of unpaired electrons in the p-subshell of carbon?
A. 1
B. 2
C. 3
D. 0
5. Which of the following is not a permissible value of magnetic quantum number (m)?
A. +2
B. +3
C. 0
D. -2
6. The maximum number of electrons that can be accommodated in a shell is given by
A. 2n^2
B. n^2
C. 2n
D. 4n
7. Which of the following has a spherical shape?
A. d-orbital
B. p-orbital
C. f-orbital
D. s-orbital
8. Which quantum number determines the orientation of an orbital in space?
A. Principal quantum number
B. Spin quantum number
C. Magnetic quantum number
D. Azimuthal quantum number
9. The probability density of an electron is represented by
A. Ψ
B. 1/Ψ
C. Ψ/2
D. Ψ^2
10. The energy of an electron in an orbit is inversely proportional to
A. 1/n
B. n
C. 1/n^2
D. n^2
11. Which of the following quantum numbers specifies the shape of an orbital?
A. Magnetic quantum number
B. Spin quantum number
C. Azimuthal quantum number
D. Principal quantum number
12. What is the energy of a photon with a frequency of 5 × 10^14 Hz?
A. 3.0 × 10^-19 J
B. 4.1 × 10^-19 J
C. 3.313 × 10^-19 J
D. 2.2 × 10^-19 J
13. The energy of an electron in the second Bohr orbit of hydrogen is
A. -3.4 eV
B. -1.7 eV
C. -6.8 eV
D. -13.6 eV
14. Which rule explains the filling of orbitals in increasing order of energy?
A. Pauli's Exclusion Principle
B. Aufbau Principle
C. Heisenberg's Uncertainty Principle
D. Hund's Rule
15. Which series in the hydrogen spectrum lies in the visible region?
A. Paschen
B. Balmer
C. Brackett
D. Lyman
16. The number of nodal planes in a d-orbital is
A. 2
B. 3
C. 4
D. 1
17. What is the energy of a photon emitted during the transition of an electron from n=3 to n=2 in hydrogen atom?
A. 3.01 eV
B. 1.89 eV
C. 2.86 eV
D. 3.75 eV
18. The frequency of light required to excite an electron in hydrogen atom from n=1 to n=2 is approximately
A. 2.5 × 10^15 Hz
B. 1.2 × 10^15 Hz
C. 1.1 × 10^15 Hz
D. 3 × 10^15 Hz
19. The maximum number of electrons that can be accommodated in the third shell is
A. 32
B. 10
C. 18
D. 8
20. Which of the following orbitals is spherical in shape?
A. s-orbital
B. f-orbital
C. d-orbital
D. p-orbital
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